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|31842:GLUCOSE TOLERANCE, 2-HOUR GESTATIONAL DIABETES MELLITUS DIAGNOSIS, 75 Gm DOSE|
|Released:||Same day as tested|
|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.|
|Rejection Criteria:||Moderate hemolysis.|
|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.