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HelpTest Code LAB82 Glucose
Useful For
Diagnosing and managing diabetes mellitus and other carbohydrate metabolism disorders including gestational diabetes, neonatal hypoglycemia, idiopathic hypoglycemia, and pancreatic islet cell carcinoma
Methodology
Enzymatic reference method with hexokinase
Performing Laboratory
Bozeman Health Laboratory Services
Specimen Requirements
Specimen Type: Plasma or serum
Container/Tube: Light-green top (lithium heparin gel), red top, or gold top
Specimen Volume: 1 mL
Specimen Minimum Volume: 0.5 mL
Collection Instructions: Complete clot formation should take place before centrifugation. Spin down and separate cells within half an hour of collection.
Specimen Transport Temperature
Ambient <8 hours/Refrigerated >8 hours
Specimen Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Plasma or serum | Ambient | 8 hours |
| Refrigerated | 3 days |
Note: Glycolysis decreases serum glucose by approximately 5% to 7% per hour in normal, uncentrifuged, coagulated blood at ambient temperature.
Reference Ranges and Critical Values
| Age Break | Normal Range | Critical Values |
|---|---|---|
| ≤ 4 hrs old | 46-60 mg/dL | <40 mg/dL or >400 mg/dL |
| > 4 hrs to 29 days old | 55-115 mg/dL | <46 mg/dL or >400 mg/dL |
| ≥ 30 days | 70-99 mg/dL | <50 mg/dL or >400 mg/dL |
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
82947