To assess glomerular filtration rate
80 - 134 mL/min.
- Creat Clearance
Collect blood in SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate. Collect 24 hour urine specimen with no preservative. Aliquot 10 ml into a plastic urine container and refrigerate. Record total 24 hour urine volume and collection dates/times on request form. Both a 24 hr urine creatinine and a serum creatinine must be ordered to obtain a calculated clearance. The serum creatinine must be drawn during the urine collection period. Note the patient's height and weight on the requisition for accurate calculation.
Creatinine Clearance (CRCL) is a calculated value based on serum and urine creatinine levels. There is no charge for the CRCL; the client or 3rd party will be billed for the serum and urine creatinine tests.