What Foods Are High in Creatinine? The Full List

The foods high in creatinine are cooked animal muscle and the liquids that come off it: roast beef, grilled steak, fried pork, barbecued chicken, baked fish, meat stock, gravy, pan juices and concentrated bouillon. Nothing else on a normal shopping list contains a meaningful amount. Eggs do not, despite being high in protein. Milk contains only traces. Every vegetable, grain, pulse, fruit, nut and seed contains none, because creatine lives in muscle and plants do not have any.

Now the distinction that most articles on this subject skip. Eating creatinine raises the creatinine in your blood. It does not damage your kidneys, reduce your filtration, or make kidney disease more likely. Those are two entirely different claims, and confusing them is why people end up frightened of a steak. What a large meat meal does is shift a measurement for a few hours. Your kidneys clear the extra load exactly as efficiently as they cleared yesterday’s, and by the following morning the number is back where it started. If you want the separate question of what a genuinely raised result signifies, what high creatinine means covers it, and the full list of causes sets diet in its proper place near the bottom.

Contains creatinine, raises creatinine, damages kidneys: three different things

Almost every confusing sentence written about food and creatinine collapses three separate ideas into one. Pull them apart and the topic becomes simple.

Keep those three columns apart and you can read almost any claim about food and creatinine and tell instantly whether it is true, misleading or nonsense. “Beef is high in creatinine” is true. “Beef raises your creatinine” is true but incomplete, because it lasts hours. “Beef damages your kidneys through creatinine” is false. “Bananas are high in creatinine” is simply wrong, though bananas matter for other reasons in kidney disease, which is why the banana question gets its own page.

There is one more layer worth adding early, because it explains why anyone cares at all. Creatinine is not measured because it is interesting. It is measured because it is a convenient stand-in for how well your kidneys filter, and that stand-in only works if the amount entering your blood each day is roughly constant. Your muscles supply a steady trickle. A large plate of roast beef supplies a sudden burst. For a few hours, the assumption underneath the whole test is violated, and the number reports a filtration problem that does not exist. That is the entire practical significance of this topic, and everything below is detail hung off that single point.

Why heat turns meat into a source of creatinine

Live muscle stores energy as phosphocreatine. Roughly 95 per cent of the body’s creatine sits in skeletal muscle, and a small fixed fraction of it, in the region of 1.6 to 1.7 per cent per day, breaks down spontaneously into creatinine. That conversion is not driven by an enzyme. It is a slow chemical cyclisation, the molecule folding in on itself and losing a water molecule, and like most chemistry it goes faster when things get hot.

An animal’s muscle at the moment of slaughter is loaded with creatine and contains very little creatinine. Raw steak is therefore a poor dietary source of creatinine and a rich source of creatine. Put that steak in a 200 °C oven and the reaction that normally takes days inside your body starts running in minutes. Some of the creatine cyclises. The longer the heat and the higher the temperature, the more of it converts. What lands on your plate is a mixture: leftover creatine, newly formed creatinine, and whatever has been driven out into the pan.

The proportions are not fixed, which is why published figures for the creatinine content of cooked meat scatter so widely. A rare steak seared for two minutes a side has converted very little. A pot roast held at temperature for three hours has converted a great deal. Both are “cooked beef” on a food label. Treat any single number you see quoted for “creatinine in beef” with suspicion, because the cooking is doing more work than the animal ever did.

The arithmetic gives a useful sense of scale. Raw beef holds somewhere around 350 to 500 mg of creatine per 100 g. If cooking converts 10 per cent of it, that is roughly 35 to 50 mg of creatinine per 100 g. At 30 per cent conversion, it is roughly 105 to 150 mg per 100 g. A 200 g portion at the upper end of that range therefore delivers something in the order of 200 to 300 mg of creatinine in one sitting, against a daily endogenous production of about 1.6 to 2.4 g in an adult. Call it a tenth of a day’s worth, arriving over twenty minutes rather than twenty-four hours. That concentration in time is what produces the measurable spike.

One more consequence of the chemistry deserves a mention, because it is genuinely interesting and rarely connected to this topic. Creatine and creatinine are the precursors from which heterocyclic aromatic amines form when meat is cooked at high temperature, particularly over a flame. Those compounds are the reason charred barbecued meat carries a health question mark of its own. So the same reaction that makes grilled steak a creatinine source also makes it a source of something more genuinely worth limiting. The creatinine is harmless. The char is the part worth thinking about.

The ranked list: which foods are actually high in creatinine

Here is the honest ranking, expressed as bands rather than false-precision numbers. The scale below reflects typical creatinine content per 100 g of the food as eaten, taking into account both the creatine the raw ingredient started with and how much of it a standard cooking method converts.

Two features of that list surprise people. Stock and gravy sit at the top, above the meat they came from, because boiling drives creatine and creatinine into the water and then reduction concentrates what is left. And raw meat sits near the bottom, below cooked chicken, because the conversion has not happened yet. A plate of steak tartare contains plenty of creatine and very little creatinine.

Ranges are drawn from published analyses of creatine in foodstuffs and vary with species, cut, feeding and freshness. The middle column is the reliable one. The right-hand column depends on your oven.

Do eggs have creatinine? No, and the reason is worth knowing

Eggs contain essentially no creatine and essentially no creatinine. This catches people out because eggs are the textbook high-protein food, and the mental shortcut “high protein means high creatinine” is extremely common. The shortcut is wrong.

Creatine is not a protein and it is not a general product of animal tissue. It is a specific energy-buffering molecule that vertebrate muscle uses to regenerate ATP during short bursts of effort. An egg is not muscle. It is a reproductive cell packaged with a yolk store of lipid and protein, laid down for an embryo that does not yet have muscles to power. There is no phosphocreatine system in it, so there is nothing to convert when you fry it.

The practical upshot: if you have a blood test tomorrow morning and you want breakfast tonight that will not touch the result, eggs are close to ideal. Two poached eggs on toast contribute nothing measurable to your serum creatinine. A bacon sandwich does. That difference is not about calories, protein or how healthy the meal is. It is purely about whether the food used to be muscle.

Does chicken have creatinine? Yes, and more than most people assume

Chicken is often recommended as the “light” protein for anyone watching their kidneys, and that reputation makes people assume it is exempt. It is not. Chicken breast is skeletal muscle, it carries creatine in the region of 300 to 400 mg per 100 g, and roasting or grilling converts a share of that to creatinine just as it does in beef.

Chicken does sit lower than beef, pork and oily fish, but the gap is smaller than the reputation suggests. Somewhere around a fifth to a quarter less creatine in the raw meat, before cooking is taken into account. A 250 g grilled chicken breast is a substantially bigger creatinine load than a 120 g rare steak, because portion size and cooking intensity swamp the species difference.

There is a common piece of advice that runs “switch from red meat to chicken to lower your creatinine”. As a strategy for the number on your blood test, it does very little. As a strategy for cardiovascular health and saturated fat intake, it may be worth doing anyway. Do not confuse the two justifications. If lowering the reading is genuinely the goal, the levers that matter are set out in how to lower creatinine levels, and diet is a small one.

Worth flagging for anyone with reduced kidney function: chicken skin, dark meat and the fatty parts are not different in creatinine terms in any way that matters. The variable that moves is cooking method, not cut. A skinless poached breast and a skin-on poached thigh are close to each other; a skinless roasted breast and a skin-on roasted thigh are both considerably higher than either.

Fish and seafood, including the outlier nobody expects

Fish is muscle, so fish contains creatine, so cooked fish contains creatinine. That much is straightforward. What is less obvious is that some fish comfortably outrank beef.

Herring is the standout. Published analyses of creatine in foodstuffs repeatedly put herring at the top of the list, roughly twice the concentration found in beef and in some samples higher still. Salmon, tuna and mackerel sit in the same band as red meat. Cod, haddock and other lean white fish sit somewhat lower. Shellfish are generally lower again, and the difference is real: prawns, mussels and scallops are not built around the same fast-twitch muscle architecture that stores large amounts of phosphocreatine.

Two practical notes. First, sashimi and other raw fish preparations are low in creatinine for the same reason steak tartare is: no heat, no conversion. Second, tinned fish has been retorted, meaning heated under pressure in the can, and the liquid it sits in has taken up whatever leached out. Draining the brine or oil from a tin of sardines removes part of that, though nobody has quantified it usefully.

The broader question of which fish suits someone who already has a raised result involves protein quality, phosphorus, sodium and omega-3 content, not just creatinine. That balance is covered separately in choosing fish with high creatinine, because the answer there is genuinely different from the ranking on this page.

Roasting, grilling, boiling: the cooking method changes everything

Two people eat 200 g of beef from the same joint. One has it as a slow-roasted, well-done slice with the pan juices poured over. The other has it boiled in a broth they then tip down the sink. The creatinine they absorb differs by a wide margin, and the animal had nothing to do with it.

Three variables drive the outcome: temperature, duration, and whether the cooking liquid ends up in your mouth.

This is the single most actionable fact on the page for anyone trying to keep a test result clean. Not “avoid meat”, which most people ignore anyway, but “if you are eating meat the night before a blood test, boil it and leave the broth”. That halves the problem without asking anyone to change what they eat.

It also explains a pattern clinicians see and patients find baffling. Someone reports eating “the same as always” and their creatinine has moved. Dig into it and they have started using a slow cooker, or begun making stock from carcasses, or switched from grilling to braising with the sauce served over the top. Same shopping list, different chemistry.

Broth, stock, gravy and bouillon: the concentrated end

Meat stock is, from a creatinine point of view, the most concentrated thing in most kitchens. It gets there by two steps that stack.

First, extraction. Simmering bones and meat in water for hours pulls out the water-soluble contents of the tissue, creatine and creatinine among them, and leaves them dissolved in the pot. Second, reduction. Continuing to simmer with the lid off evaporates water and leaves the solutes behind, so every millilitre gets stronger. A commercial stock cube or concentrated bouillon paste takes that process to its conclusion, which is why a single cube dissolved in a mug can carry more creatinine than a modest portion of the meat it was made from.

None of this makes stock harmful. It is a normal food and the sodium in the commercial versions is a far more legitimate concern than the creatinine. But if you are trying to produce a clean baseline blood test, a mug of bone broth two hours beforehand is a worse idea than a small steak the previous evening, and almost nobody realises that.

The essentially-zero list: what does not contain creatinine at all

This list is longer than the first one, and it is the part that reassures most readers.

Plants have no creatine because they do not use the phosphocreatine energy system. They manage rapid energy demand differently, and the enzyme that makes creatine is absent. So a plant food cannot contain creatine, and without creatine there is nothing for heat to turn into creatinine. Roasting vegetables at 220 °C produces caramelisation, browning and a great deal of flavour, and no creatinine whatsoever.

Plant protein isolates follow the same rule. Pea protein, soy protein and rice protein powders contain no creatine, which is exactly why vegetarian athletes are the group in whom creatine supplementation produces the largest measurable effect: they start with a smaller stored pool. That is a different question from this one and it is covered in whether creatine supplements raise creatinine.

Whey protein is worth singling out because gym-goers ask about it constantly. Whey is a milk fraction, not a muscle fraction. It carries at most traces of creatine, and a scoop of whey does not deliver a creatinine load in the way a chicken breast does. The reason a heavy whey user might still show a slightly different profile is the protein load itself, which shifts urea, and the training that usually accompanies it, which shifts creatinine production from the muscle side.

One frequently repeated claim needs correcting. Some sites list foods such as tomatoes, bananas, potatoes, oranges, spinach and dairy as “high creatinine foods”. They are not. Those lists are recycled renal-diet advice about potassium and phosphorus, which are genuine considerations in advanced kidney disease and have nothing to do with creatinine content. The individual cases are worth reading properly: tomatoes, peanuts and milk choices each get their own treatment, and in none of them is creatinine content the reason.

How much does a meat meal actually move your blood test?

This is the number people want, and it is worth being precise about what is known and what is not.

Studies that have fed volunteers a measured cooked-meat meal and then sampled their blood repeatedly show a consistent pattern. Serum creatinine begins to rise within an hour, peaks somewhere around two to four hours after the meal, and returns to baseline over the following several hours. The size of the peak in most published work sits in the region of 0.2 to 0.4 mg/dL, which is about 18 to 35 µmol/L, following a meal containing something like 200 to 300 g of cooked meat. Smaller meals produce smaller rises. A sandwich does not do this.

A rise of 0.2 to 0.4 mg/dL sounds trivial. Look at what it does to a filtration estimate and it stops sounding trivial, because the equations are steep in the range where most people sit.

Those eGFR values are calculated with the 2021 CKD-EPI creatinine equation for a 50-year-old man, using a 0.25 mg/dL rise as a mid-range post-meal effect. The middle row is the one that matters clinically. A person whose true filtration is a comfortable 82 gets a report saying 64, which crosses the threshold that defines stage 3 chronic kidney disease. Nothing has happened to their kidneys. They had a roast dinner four hours before the blood draw.

The same steepness shows up in a creatinine clearance estimate. Running the Cockcroft-Gault equation for an 80 kg man of 50 with a creatinine of 1.10 mg/dL gives about 91 mL/min; at 1.35 mg/dL it gives about 74 mL/min, a fall of roughly 19 per cent. If that estimate is being used to set a drug dose, the meal has just changed the answer. This is precisely why clearance-based drug dosing is done on a stable, ideally fasting, sample rather than on whatever result happens to be available.

Three things modify the size of the effect, and they are worth knowing because they explain why individuals differ so much.

How much you ate. The dose-response is close to linear across normal portion sizes. A 100 g chicken breast produces perhaps a third of what a 300 g roast produces. This is the dominant variable.

How it was cooked. Everything in the section above. A boiled portion with the liquid discarded may produce half the rise of an equivalent roasted portion served with gravy.

How well your kidneys clear. Counter-intuitively, the effect is larger and longer-lasting in someone with reduced function, because clearing the extra load takes longer. In advanced chronic kidney disease a meat meal can measurably shift a result the following morning. In a healthy 25-year-old it is gone by bedtime. That is also why the food question genuinely matters more the further down the filtration scale you are, and why creatinine fluctuation is a bigger practical problem in stage 3 and beyond.

Fasting, timing and what to do before a creatinine test

Standard guidance is that a creatinine test does not require fasting. That is true in the narrow sense that no laboratory will refuse your sample and no clinician will be surprised by it. It is also, in the specific case of a large cooked-meat meal shortly beforehand, a bit generous.

The honest position is this. For a routine screening test in someone with no kidney concerns, eating normally is fine, because a difference of 0.2 mg/dL will not change anything anyone does. For a test that will be compared against a previous result, used to stage kidney disease, used to decide about a referral, or used to set a drug dose, the meal matters, and controlling it costs nothing.

Consistency deserves the emphasis it gets in that last step. A result that is 0.2 mg/dL high because you ate is not dangerous. A result that is 0.2 mg/dL high this year and was taken fasting last year creates a fictional decline in kidney function, and fictional declines get investigated. The point of standardising is not accuracy in the abstract. It is comparability.

The general question of preparing for a test, including hydration, medication timing and what does and does not help in the twenty-four hours beforehand, is covered in more depth in what actually changes creatinine overnight. The short answer there, as here, is that you are standardising a measurement rather than treating anything. For an outside description of what the test involves and how results are used, MedlinePlus on the creatinine test is a good plain-language reference.

Why a vegetarian’s creatinine reads lower

Vegetarians and vegans consistently show lower serum creatinine than omnivores, and there are three reasons stacked on top of each other. Understanding them matters, because the lower number is not straightforwardly good news.

The third reason is muscle mass. Long-term vegetarians and vegans on average carry somewhat less skeletal muscle than omnivores, though this varies enormously between individuals and is entirely modifiable with training and adequate protein. Since about 95 per cent of body creatine sits in skeletal muscle, less muscle means less production, independent of anything on the plate.

All three push the same way, and the result is a serum creatinine that can sit meaningfully below the omnivore average. Now the complication. Estimated GFR equations convert creatinine into a filtration estimate using coefficients derived from mixed populations eating ordinary diets. Feed a low creatinine into an equation calibrated on omnivores and you get a filtration estimate that is flattering. A vegetarian with genuinely reduced kidney function can be assigned an eGFR that looks better than their kidneys actually are, and early impairment can be missed.

The mirror image applies to the very muscular. A competitive bodybuilder eating 250 g of cooked meat a day sits at the opposite end of all three variables and can show a creatinine well above the reference range with perfectly normal kidneys. Their eGFR reads low and means nothing. Both errors come from the same source: creatinine is a muscle-derived marker being used as a kidney marker, and anything that changes the muscle side changes the answer. The low creatinine and causes of low creatinine pages cover the other end of this in detail.

What meat does to urine creatinine, collections and ratios

Serum creatinine is not the only place a meat meal shows up, and the urine effects are less widely appreciated.

Absorbed dietary creatinine is cleared into the urine along with the endogenous supply, so urine creatinine concentration rises after a meat meal too. In a 24-hour collection, the total amount of creatinine excreted over the day includes whatever you ate. Since 24-hour creatinine excretion is often used as a check on whether the collection was complete, a meat-heavy day can make an incomplete collection look adequate, or an ordinary collection look unusually high. This is one reason some laboratories advise avoiding meat during a timed collection, and it is worth asking about if you are given a jug and no instructions. See urine creatinine for the wider picture.

There is a subtler effect on ratio-based tests. The urine protein to creatinine ratio and the albumin to creatinine ratio both divide by urine creatinine to correct for how dilute the sample is. If urine creatinine is transiently elevated by a meat meal, the ratio is divided by a larger number and comes out lower than it should. A meat meal can therefore make protein leakage look slightly better than it is. The effect is modest and usually swamped by other variation, but it is another argument for taking these samples first thing in the morning, before the day’s food. Calculating the protein-creatinine ratio and its normal range both assume a representative sample.

Measured creatinine clearance, where blood and urine are both sampled, is affected in a more complicated way. A meat meal raises both the serum and the urine value, and the clearance is a ratio of the two, so the effects partially cancel. Partially, not completely, because the timing of the rise differs between the two compartments. Anyone being assessed with a formal clearance measurement should follow the laboratory’s dietary instructions precisely rather than reasoning about it from first principles. What creatinine clearance measures explains the method, and the normal ranges assume standard conditions.

Other things you swallow that raise creatinine, by other routes

Dietary creatinine is one mechanism. Several other things you consume move the number for entirely different reasons, and lumping them together is a common source of confusion.

Creatine supplements deserve the clearest statement because the confusion is so widespread. Taking creatine raises measured creatinine modestly and does not damage kidneys in healthy users. It looks identical on a report to early impairment, which is why anyone taking it should say so before their bloods are interpreted. The full argument sits in does creatine increase creatinine.

Alcohol is worth a note of its own since it comes up alongside food questions constantly. The creatinine effect of a heavy night is mostly a dehydration effect, and it behaves like any other dehydration effect: reversible, proportional to fluid deficit, and gone once you rehydrate. The liver and blood pressure consequences of sustained heavy drinking are the real kidney-relevant issue, not the creatinine reading the next morning. Alcohol and creatinine goes through it.

Herbal preparations are the one genuinely risky category on that list, and the risk has nothing to do with creatinine content. Certain traditional remedies have been definitively linked to severe kidney injury, and “natural” carries no protective meaning here. If you are taking anything herbal and your creatinine is moving, that is a conversation to have with a doctor rather than a forum.

Does eating creatinine damage your kidneys?

No. Take the question seriously for a moment rather than dismissing it, because the logic behind the worry is not stupid.

The worry runs: creatinine is a waste product, my kidneys have to get rid of it, so eating more of it means making my kidneys work harder, and working harder means wearing out. Each step sounds reasonable. The last one is where it breaks down.

Filtration is not a wearing mechanism. Your kidneys filter roughly 180 litres of plasma a day and reabsorb almost all of it, and creatinine is a passive passenger in that process. It is filtered freely at the glomerulus, with a further 10 to 15 per cent secreted by transporters in the tubule, and it requires no extra work from the kidney to remove. Adding a few hundred milligrams to a day’s load changes nothing about how hard anything works. Compare that to the amounts of sodium, water and urea the kidney handles every single day and the dietary creatinine contribution disappears into the noise.

There is also no plausible toxic mechanism. Creatinine at the concentrations reached in blood is inert. It is measured precisely because it is boring: produced steadily, cleared predictably, and doing nothing along the way. The symptoms people associate with high creatinine in kidney failure are caused by the other things accumulating alongside it, not by creatinine itself. That point is developed properly in does creatinine damage kidneys.

If you want the wider context for what genuinely causes and drives kidney disease, rather than what shifts a measurement for an afternoon, the NIDDK overview of chronic kidney disease sets out the established risk factors. Diabetes, high blood pressure, cardiovascular disease, family history, age. Dietary creatinine appears on none of those lists, and it never has.

One caveat, stated plainly. If you are on a prescribed renal diet, follow it. The advice you have been given accounts for your potassium, phosphorus, sodium and protein targets, and nothing on this page overrides it. What this page corrects is the belief that meat is bad for your kidneys because of the creatinine in it. If your dietitian has restricted meat, it is for protein, phosphorus or a different reason entirely, and that restriction stands.

Who actually needs to think about this, and who does not

Most readers of this page can stop worrying after the next paragraph. A minority genuinely should pay attention, and it is worth being clear about which group you are in.

The pattern across that table is worth naming. Dietary creatinine matters in proportion to how much weight is being placed on the exact value. When the number is a rough screening check, a 0.2 mg/dL wobble is irrelevant. When the number is being used to stage disease, set a dose, or decide about a referral, the same wobble becomes worth eliminating for the cost of skipping one dinner.

Mistakes people make with this

If there is one sentence to take from all of that, it is this: change your test conditions before you change your diet. Almost everyone who arrives at this page worried about food has a measurement problem rather than a nutrition problem, and the fix costs one evening rather than a lifetime of avoiding roast dinners.

Related reading across the cluster: what creatinine is, where creatinine comes from, creatinine on a blood test, what counts as a normal level, calculating GFR from creatinine, and clearance versus GFR.

Foods high in creatinine: frequently asked questions