Creatinine is a breakdown product of creatine, which is an important part of muscle. Creatinine is removed from the body entirely by the kidneys. This article discusses the test done to measure the amount of creatinine in your urine.
A blood test can also be used to determine your creatinine level. See: Serum creatinine
Urine creatinine test
How the test is performed
A random urine sample or a 24-hour collection may used. For information on how to collect a 24-hour urine sample, see: 24-hour urine collection .
How to prepare for the test
Your health care provider may tell you to temporarily stop taking certain medicines that may interfere with test results. Such medicines include:
How the test will feel
The test involves only normal urination, and there is no discomfort.
Why the test is performed
Definition Fractional excretion of sodium (FENa) is the amount of salt (sodium) that leaves your body through urine compared to the amount filtered and reabsorbed by the kidney. FENa is not a test, but rather a calculation based on the concentrations of sodium and creatinine in your blood and urine. Urine and blood chemistry tests are necessary to perform this calculation. Alternative Names FE sodium; FENa How the test is performed Blood and urine samples are sent to a lab, where they are examined for their salt (sodium) and creatinine levels. For information on how a blood sample is taken from a vein, see venipuncture . For information on giving a urine sample, see clean catch urine sample . How to prepare for the test Eat a normal diet with a normal amount of salt, unless otherwise instructed by your doctor. Your health care provider will instruct you, if necessary, to discontinue drugs that may interfere with test results. Certain diuretic medicines may affect test results. How the test will fee...
I've been diagnosed with complicated migraines. I currently take depakote for my symptoms, which are very similar to a TIA. I don't experience much pain, however I have a sensation that my brain is spastic at times. Is this a common effect of complicated migraines? Heather.
First, it would be helpful to you to get a diagnosis that falls within the standardized and recognized diagnoses of the field. To simplify matters and make it easier for people to get information and treatment, doctors usually go by the gold standard for diagnosis, the International Headache Society's International Classification of Headache Disorders, 2nd Edition (ICHD-II). Although people often ask what “complex” or “complicated” Migraines are, there’s no such diagnoses under ICHD-II. We do see it used, but doctors use it differently, so it really doesn't tell anyone what ty...
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