Creatinine

Test Code

LAB66

Alias/See Also

1231100110

CPT Codes
82565

Includes

CREATININE, BLOOD ESTIMATED GLOMERULAR FILTRATION RATE

Preferred Specimen

CLINIC COLLECTIONS: Green Lithium Heparin tube (Gel separator preferred)

Minimum Volume

CLINIC COLLECTIONS: 0.5 mL plasma

Instructions

CLINIC COLLECTIONS: Collect 0.5 ml plasma in Green Lithium Heparin tube (Gel separator preferred). Must be spun within 2 hours after collection. If no gel separator, plasma must be pulled off cells within 2 hours.

If collecting with AST, ALT, VD25, K+, or LDH, label routes to Gold/SST. Collect 1.0 mL of serum in Gold/SST. Must be spun within 2 hours after collection.

Transport Temperature

Refrigerated

Specimen Stability

Room Temperature (20 to 25°C): 7 days
Refrigerated (2 to 8°C): 7 days
Freezer (-20°C): 3 months

Methodology
Abbott Alinity

Reference Range

Males:
0-4 Years: 0.10-0.60 mg/dL
4-7 Years: 0.10-0.70 mg/dL
7-10 Years: 0.30-0.70 mg/dL
10-14 Years: 0.4-1.00 mg/dL
14-18 Years: 0.60-1.20 mg/dL
Adults: 0.72-1.25 mg/dL
Females:
0-4 Years: 0.10-0.60 mg/dL
4-7 Years: 0.10-0.70 mg/dL
7-10 Years: 0.30-0.70 mg/dL
10-14 Years: 0.4-1.00 mg/dL
Adults: 0.57-1.11 mg/dL

Performing Laboratory
ARKADELPHIA LABORATORY CONWAY LABORATORY FORT SMITH LABORATORY HEBER SPRINGS LABORATORY LITTLE ROCK LABORATORY NORTH LITTLE ROCK LABORATORY STUTTGART LABORATORY VAN BUREN LABORATORY MALVERN LABORATORY EL DORADO LABORATORY MAGNOLIA LABORATORY DREW COUNTY LABORATORY

Last Updated: August 26, 2026

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.