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Creatinine Clearance 12 hr

Centralized Core Laboratory : Chemistry

Test ID/Workstation :
Specimen Type:
Blood and Urine
Tube Type:
Green top (lithium heparin) tube and Urine container
Collection Volume:
1.5 mL blood and entire 12 hour urine collection. See Special Instructions
Shipping- Send Refrigerated; Storage-Plasma- Room Temp & Refrigerated: 7 days; Frozen 3 months; Urine: R.T. 2 days, Refrig 6 days, Frozen 6 months
24 hours/day, 7 days/week
Roche-Enzymatic Colorimetric
Special Instructions:
Collect 1.5 mL Green top (lithium heparin) tube and 12 hour urine in an urine collection container. Due to compliance regulations blood creatinine must be collected during the 12 hours that the urine is being collected. Instruct patient on 12 hour urine collection. Refrigerate 12 hour urines during collection. Do not use urine preservatives. Mark each collection container with the following information required for resulting: patient demographic information, patient height (centimeters), patient weight (kilograms), and date and time collection was started and finished. Deliver specimens promptly to the lab.
1 hour
Additional Info:
Ref. range is age dependent; avail on patient report
CPT Code:
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The five differences are:
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