GLUCOSE TOLERANCE, 2 HOUR NON-GESTATIONAL

Test Code

GLUP2 (OE), GLUCP2 (LAB)

CPT Codes
82947, 82950

Includes

Baseline (glucose) fasting
2 hour glucose (post 75g dose)

Preferred Specimen

Gold Tube (SST)

Patient Preparation
Patient must be fasting at least 8 hours prior to collection.

A total of 2 specimens will be drawn

Draw fasting specimen
Administer 75g oral glucose (Glucola) or dose specified by physician
Draw specimen 2 hours after consumption of oral glucose (Glucola)

Minimum Volume

1 mL

Other Acceptable Specimens

Green Tube (Lithium Heparin)

Instructions

Separate serum or plasma from red cells rapidly to minimize the loss of glucose through glycolysis.

Transport Container

GOLD Tube

Transport Temperature

Room temperature

Specimen Stability

2-8°C up to 3 days
15-30°C up to 24 hours (plasma)
15-30°C up to 8 hours (serum)

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Collection time not labeled correctly on tube (s)
Hemolyzed

Methodology
Hexokinase

Setup Schedule

DAILY, as received

Report Available

STAT: <60 minutes
Routine: <4 hours

Reference Range

Male/Female All Ages: Normal Range: 65-99 mg/dL (FASTING)
Male/Female All Ages: Normal Range: <140 mg/dL (2HR)

Clinical Significance

This is the one-step glucose tolerance test recommended by the American Diabetes Association (ADA) used to establish the diagnosis of diabetes mellitus in males, non-pregnant females, and children.

Performing Laboratory
Mount Sinai Hospital
Holy Cross Hospital

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.