CREATININE CLEARANCE, urine (087-0037)

CREAT-CLEA

Two-point Rate

Clinical Chemistry

Routine: 4 hours; STAT: 1 hour 

Collect: 24-hour Urine Specimen: Discard the first early morning specimen. Start timing from this point. Collect all urine voided during the next 24 hours in a urine container that is free of preservatives. Note the time that the last specimen is collected during this 24-hour period. This is the finish time that should be recorded on the lab request slip. Blood: Routine venipuncture. SST (gel barrier) or red topped vacutainer tube.

Storage/Transport:  Urine: Store specimen at 2-8°C during collection and until delivered to the laboratory. Blood: Centrifuge the specimen within 4 hours of collection to separate serum from red cells. Refrigerate at 2-8°C.

Causes for Rejection: Urine: Collection in preservative, improperly labeled specimen, and QNS specimen; Blood: Gross hemolysis, improperly labeled specimen, and QNS specimen

If applicable, state clinical information that is required to be provided with specimen.

By report (Reports may vary based on instrumentation, patient age and gender)

Indicate total volume of urine and time of collection on requisition. Serum specimen required within 24 hours of the urine collection.

82575

When ordering tests for which Medicare or Medicaid reimbursement will be sought, physicians should only order tests that are medically necessary for the diagnosis or treatment of the patient.  Components of the organ or disease panels may be ordered individually.  The diagnostic information must substantiate all tests ordered and must be in the form of an ICD-9 code or its verbal equivalent.

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