A 24-hour urine test is a diagnostic procedure used to measure various substances excreted in urine over a 24-hour period. It can provide valuable information about kidney function, electrolyte balance, and other aspects of health.
Key points:
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Steps: The patient collects all urine produced over a 24-hour period. Usually, the process starts with an empty bladder, and all urine thereafter is collected, including the first morning urine the next day. Urine is stored in a container provided by the healthcare provider, and kept in a refrigerator to prevent bacterial growth.
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Analysis: The laboratory analyzes the urine sample to measure various substances such as creatinine, electrolytes (sodium, potassium, chloride), protein, hormones, and other markers.
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Interpretation: Results are interpreted by healthcare providers in the context of the patient's [medical history](../medical-history/) and symptoms. Abnormal levels of certain substances may indicate kidney dysfunction, dehydration, electrolyte imbalances, or other health issues.
Tests may include:
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N-methyl histamine
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2,3-Dinor-11beta-prostaglandin F2 alpha level
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Leukotriene E4 level