Creatinine is a product derived from the decomposition of a major part of the muscle: creatine. Its removal from the body is through the kidneys, so their analysed values illustrate the functioning of these organs. Creatinine values can be calculated via two methods: through urinary andblood samples. When kidney function is abnormal, blood creatinine increase in the blood stream and decrease in the urine, as this is how it is removed. Creatinine values may vary according to sex, height and weight of the individual. At OneHowTo.com we explain what are normal creatinine values.
Normal blood creatinine values
To obtain creatinine values in the blood we needs a sample of it, and so it will be extracted by a nurse via venipuncture. During the reading of the test results we will find the results of the creatinine test in the biochemistry section.
It is possible that before taking the sample your doctor may ask you to temporarily stop taking certain drugs that can change the outcome of the analysis. It is the case of: nephrotoxic drugs, NSAIDs, aminoglycosides, heavy chemotherapeutic drugs, among others.
To read the results you must take into account that women often have lower creatinine levels compared to men because typically women have less muscle mass. So normal blood creatinine values are:
- women: between 0.6 and 1.1 mg / dl.
- men: between 0.7 and 1.3 mg / dl
Abnormal blood creatinine values
If creatinine values are lower to the normal ones this is usually associated with a muscle problem such as mass loss or a problem on a nervous level.
For individuals that get high blood creatinine values, this can find its cause in: dehydration, problems during pregnancy (eclampsia, seizures), urinary tract obstruction or any kind of kidney problems (infection, injury).
Normal values for creatinine in urine
In cases of creatinine in urine this requires a urine sample collected over 24 hours in a special container. The right thing is to urinate in one bottle from when the individual wakes up and until bedtime. The sample must be kept in a refrigerator until delivery to the laboratory.
It is important to inform the doctor who has requested the analysis if you are taking any medication such as antibiotics, cimetidine or cisplatin; as they may interfere with the results. Still, do not stop treatment if your doctor has not instructed you directly to do so.
The values of creatinine in urine (24-hour display) may vary from 500 to 2000 mg / day. The results depend on the age and lean body mass. The normal range by gender can be interpreted as follows:
- in women: 11 to 20 mg per kg body mass.
- in men between 14 and 26 mg per kg body mass.
Abnormal urine creatinine values
When the results of urine creatinine are not among normal ranges this can be due to a diet rich in meat, kidney infection, poor blood flow to the kidneys, kidney problems or loss of muscle tissue.
If you want to know how to normalize creatinine levels check out this article.
This article is merely informative, OneHowTo does not have the authority to prescribe any medical treatments or create a diagnosis. We invite you to visit your doctor if you have any type of condition or pain.
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