31842:GLUCOSE TOLERANCE, 2-HOUR GESTATIONAL DIABETES MELLITUS DIAGNOSIS, 75 Gm DOSE

Print View Attached Docs:
31842:GLUCOSE TOLERANCE, 2-HOUR GESTATIONAL DIABETES MELLITUS DIAGNOSIS, 75 Gm DOSE
Methodology: Hexokinase
Edit Date: 6/11/2010
Performed: Daily
Released: Same day as tested
CPT Code: 82951
Specimen Collection Details
Collection: THIS TEST IS FOR PREGNANT WOMEN. Collection performed Monday-Saturday by appointment with PeaceHealth Laboratories Outpatient Phlebotomy. Patient must be fasting 8-16 hours prior to collection.
Three specimens required: Fasting, 1 hour, and 2 hour.Collect one 7.5 mL serum separator tube (SST) for each draw. Also acceptable: One 4.5 light green top plasma separator tube (PST), one 2 mL grey top tube, or one 5 mL gold top serum separator tube (SST) for each draw. Procedure: A glucola dosage of 75 grams is administered after fasting specimen is drawn. The 1- hour and 2- hour specimens are drawn subsequent to the ingestion of the glucola dose.
Handling: Centrifuge and separate serum or plasma from cells immediately. Centrifuge serum or plasma separator tube and transport in the original tube. Clearly indicate the draw time and fasting or post-glucola dose, and the order of each draw, e.g., “1 of 3,”, etc., on each specimen. Refrigerate.
Stability: 8 hours ambient, 6 days refrigerated, or 3 months frozen.
Standard Volume: 2 mL serum or plasma each draw.
Minimum Volume: 0.5 mL serum or plasma each draw.
Transport: Refrigerated.
Rejection Criteria: Moderate hemolysis.

Reference Range:
Fasting <95 mg/dL
1 hour <180 mg/dL
2 hour <155 mg/dL

Interpretive Guidelines: The Diagnosis of Gestational Diabetes Mellitus requires that two or more of the plasma glucose values obtained during this tolerance test must meet or exceed the reference value.

PeaceHealth Laboratories