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| 30830:GLUCOSE, GESTATIONAL DIABETES MELLITUS SCREEN | |||||||||
| Methodology: | Hexokinase | ||||||||
| Edit Date: | 6/11/2010 | ||||||||
| Performed: | Daily | ||||||||
| Released: | Same day as tested | ||||||||
| CPT Code: | 82950 | ||||||||
| Specimen Collection Details | |||||||||
| Collection: | THIS TEST IS FOR PREGNANT WOMEN. This screening test should be performed between 24 and 28 weeks gestation. Patient need not be fasting. PROCEDURE: 50 grams of glucola is administered orally. One hour after ingestion of the glucola dose, collect one 7.5 mL serum separator tube (SST), one 4 mL green top heparinized plasma separator tube (PST), or one 2 mL grey top tube (potassium oxalate/sodium fluoride). | ||||||||
| Handling: | Centrifuge and separate serum or plasma from cells immediately. Specimen drawn in serum or plasma separator tube can be transported in the original tube after centrifugation. Refrigerate for transport. | ||||||||
| Stability: | 8 hours ambient, 6 days refrigerated, or indefinitely if frozen. | ||||||||
| Standard Volume: | 2 mL plasma. | ||||||||
| Minimum Volume: | 0.5 mL plasma. | ||||||||
| Transport: | Refrigerated. | ||||||||
| Rejection Criteria: | Moderate hemolysis. | ||||||||
| Reference Range: 1 hour: 70-139 mg/dL
Interpretive Guidelines: |
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| A value of ≥140 mg/dL, 1 hour after the 50 gram load indicates the need for a full diagnostic, 100 gram OGTT [Glucose, Gestational DM Diagnosis Profile (31930)], performed in a fasting state. | |||||||||||||||||||