Glucose, Gestational Screen (50g), 135 Cutoff

Test Code

LAB3558

Alias/See Also

1231100420

CPT Codes
82950

Includes

GLUCOSE, GESTATIONAL SCREEN (50G), 135 CUTOFF

Preferred Specimen

Fluoride/oxalate (gray-top) tubes upopened, unspun.

Patient Preparation
The patient is given a 50 g dose of glucose and a single blood specimen is obtained one hour later. Serum and plasma submissions not in Fluoride/oxalate must be separated from cells. Note: The test should be performed between weeks 24 and 28 of gestation.

Minimum Volume

1 mL plasma

Other Acceptable Specimens

Serum (separated from cells immediately) in a plastic screw-cap vial Spun SST Plasma from lithium heparin (green-top) tube in a plastic screw-cap vial Plasma from sodium heparin (green-top) tube in a plastic screw-cap vial

Instructions

The patient is given a 50 g dose of glucose and a single blood specimen is obtained one hour later. Serum and plasma (not collected in gray-top) submissions must be separated from cells.

Methodology
Abbott Alinity

Reference Range

Males/Females:
>50-135 mg/dL

Performing Laboratory
LITTLE ROCK 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.