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 The growth hormone test measures the amount of growth hormone in the blood. Alternative Names GH How the test is performed Blood is typically drawn from a vein, usually from the inside of the elbow or the back of the hand. The site is cleaned with germ-killing medicine (antiseptic). The health care provider wraps an elastic band around the upper arm to apply pressure to the area and make the vein swell with blood. Next, the health care provider gently inserts a needle into the vein. The blood collects into an airtight vial or tube attached to the needle. The elastic band is removed from your arm. Once the blood has been collected, the needle is removed, and the puncture site is covered to stop any bleeding. In infants or young children, a sharp tool called a lancet may be used to puncture the skin and make it bleed. The blood collects into a small glass tube called a pipette, or onto a slide or test strip. A bandage may be placed over the area if there is any bleeding. How to prepa...
Definition Blood or urine tests can determine the levels of various hormones in the body. This includes reproductive hormones, thyroid hormones, adrenal hormones, pituitary hormones, and many others. For more information, see: 5-HIAA 17-OH progesterone 17-hydroxycorticosteroids 17-ketosteroids 24-hours urinary aldosterone excretion rate 25-OH Vitamin D Adrenocorticotropic hormone (ACTH) ACTH stimulation test ACTH suppression test ADH Aldosterone Calcitonin Catecholamines - blood Catecholamines - urine Cortisol level Cortisol - urine DHEA-sulfate Folicle stimulating hormone (FSH) Growth hormone HCG (qualitative - blood) HCG (qualitative - urine) HCG (quantitative) Lutenizing hormone (LH) LH response to GnRH Parathormone Renin Pregnanediol Progesterone - serum Prolactin PTH-related peptide RT3U Secretin stimulation test Serotonin T3 T4 Testosterone Thyroid stimulating hormone (TSH) How the test is performed How to prepare for the test How the test will feel Why the test is performed
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