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Glucose : 483
Test CodeGFSTAU or 483
CPT Codes
82947
Instructions
Fasting preferred. Fasting is defined as no consumption of food or beverage other than water for at least 8 hours before testing.
Transport Container
Preferred Specimen
1 mL serum
Alternative Specimens
Spun SST; Plasma from lithium heparin (green-top) tube in a plastic screw-cap vial; Plasma from sodium heparin (green-top) tube in a plastic screw-cap vial; Plasma from fluoride/oxalate (gray-top) tube in a plastic screw-cap vial
Minimum Volume
0.5 mL
Serum and plasma submissions must be separated from cells
1 mL serum
Alternative Specimens
Spun SST; Plasma from lithium heparin (green-top) tube in a plastic screw-cap vial; Plasma from sodium heparin (green-top) tube in a plastic screw-cap vial; Plasma from fluoride/oxalate (gray-top) tube in a plastic screw-cap vial
Minimum Volume
0.5 mL
Serum and plasma submissions must be separated from cells
Transport Temperature
Room temperature.
Specimen Stability
Serum
Room temperature: 4 days; Refrigerated: 7 days; Frozen: 28 days
Whole blood (gray-top) tube
Room temperature: 24 hours; Refrigerated: 72 hours: Frozen: Unacceptable
Sodium fluoride plasma
Room temperature: 7 days; Refrigerated: 7 days; Frozen: 28 days
Heparinized plasma
Room temperature: 48 hours; Refrigerated: 7 days; Frozen: 28 days
Room temperature: 4 days; Refrigerated: 7 days; Frozen: 28 days
Whole blood (gray-top) tube
Room temperature: 24 hours; Refrigerated: 72 hours: Frozen: Unacceptable
Sodium fluoride plasma
Room temperature: 7 days; Refrigerated: 7 days; Frozen: 28 days
Heparinized plasma
Room temperature: 48 hours; Refrigerated: 7 days; Frozen: 28 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Unspun serum or plasma separator tube (SST or PST); Red-top or green-top tube (serum or heparinized plasma not separated from cells); Anticoagulants other than lithium heparin, sodium heparin, or fluoride/oxalate
Methodology
Spectrophotometry
Setup Schedule
Sunday - Saturday
Report Available
1 day
Reference Range
Fasting Reference Interval 65-99 mg/dL
Non-fasting Reference Interval 65-139 mg/dL
Non-fasting Reference Interval 65-139 mg/dL
Clinical Significance
Serum glucose levels may be abnormally high (hyperglycemia) or abnormally low (hypoglycemia). Glucose measurements are used in the diagnosis and treatment of carbohydrate metabolic disorders including diabetes mellitus, idiopathic hypoglycemia, and pancreatic islet cell neoplasm.
Performing Laboratory
med fusion
