Free cortisol

Urine free cortisol is filtered from the free cortisol in the blood through the glomerulus, so the base amount is directly proportional to the truly biologically active free cortisol in the plasma. Determination of urine free cortisol can effectively and correctly reflect the functional status of the adrenal cortex. Save 24h urine volume and use 10ml glacial acetic acid as a preservative.

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