32240:CREATININE CLEARANCE

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32240:CREATININE CLEARANCE
Methodology: Colorimetry/ Alkaline Picrate
Edit Date: 2/13/2009
Performed: Daily
Released: Same day as tested
CPT Code: 82575
Specimen Collection Details
Collection: Two specimens required. SERUM: One 7.5 mL serum separator tube (SST) for the serum creatinine. NOTE: The serum specimen must be obtained within 24 hours of the start or stop time of the urine collection. URINE: 24-hour collection preferred, or a minimum 4-hour collection is accepted. Refrigerate during collection, handling, and transport. Do not add preservatives. Note time collection started and stopped, and the patient’s height and weight on the requisition.
Handling: Centrifuge SST and transport in original tube. Send complete urine collection in original container. Patient’s height and weight information MUST be sent with specimens. A 25 mL aliquot of the urine may be submitted by following this protocol: Mix the entire urine collection well, measure and record the total volume. Pour aliquot of urine into sterile container.
Standard Volume: Total urine collection or 25 mL aliquot, AND 2 mL serum.
Minimum Volume: 5 mL urine AND 0.5 mL serum.
Transport: Refrigerated.
Rejection Criteria: Incomplete urine collection; specimen not refrigerated.

Results vary for age and sex. See individual components.