Printable Test Catalog - OU Medicine

SPECIMEN VOLUME: 10 mL
MINIMUM VOLUME: 1 mL
TEST AVAILABILITY: Daily
TURNAROUND TIME: 8 hours
REFERENCE RANGE: 0-18 years: 70-140 mL/min
> 18 years (Female): 75-115 mL/min
> 18 years (Male): 85-125 mL/min
METHODOLOGY: Jaffe rate
CLINICAL USE: Renal function test, estimate glomerular
filtration rate, follow possible progression of
renal disease, adjust medications
CPT: 82575
[CREAGUAN] CREATINE/GUANIDINOACETATE
SPECIMEN REQUIRED: Frozen plasma
TUBE OR CONTAINER: Lavender (EDTA) or Green (heparin)
SPECIMEN VOLUME: 1 mL
TEST INCLUDES: Creatine and Guanidinoacetate
TEST AVAILABILITY: Daily
TURNAROUND TIME: 6-8 days
REFERENCE RANGE: Creatine:
Children: 34 - 130 micromoles/ml plasma
Adults: 14 - 120 micromoles/ml plasma
Guanidinoacetate:
Children: 0.7 - 5.4 micromoles/ml plasma
Adults: 0.7 - 8.7 micromoles/ml plasma
METHODOLOGY: Isotope dilution tandem mass spectroscopy
CLINICAL USE: Assess abnormalities in the synthesis of creatine
CPT: 83789 x 2
[CREAT] Creatinine
SPECIMEN REQUIRED: Refrigerated plasma or serum
TUBE OR CONTAINER: Light Green (heparin) or Gold
SPECIMEN VOLUME: 1 mL
MINIMUM VOLUME: 0.5 mL
TEST AVAILABILITY: Daily
TURNAROUND TIME: 8 hours
REFERENCE RANGE: 0-2 years: 0.2-0.4 mg/dL
2-12 years: 0.2-0.7 mg/dL
12 years + (Female): 0.7-1.2 mg/dL
12 years + (Male): 0.8-1.2 mg/dL
METHODOLOGY: Jaffe rate
CLINICAL USE: Aid in diagnosis and treatment of renal diseases,
in monitoring renal dialysis, and as a calculation
basis for measuring other urine analytes
CPT: 82565
[CREATINE] Creatine
SPECIMEN REQUIRED: Frozen serum
TUBE OR CONTAINER: Red or Gold