Glucose, Fasting

Test Code

LAB81

Alias/See Also

Blood Sugar; FBS

CPT Codes
82947

Instructions

Routine venipuncture Collect one 4.5ml light green top (heparin) tube, one 2.0ml Gray top (sodium fluoride) tube or one 5ml red/gold top serum separator tube

Specimen Stability

Refrigerate, stable 48 hours; stable 8 hours at room temperature; stable >48 hours if frozen.

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Insufficient quantity; gross hemolysis; failure to follow stability requirements

Methodology
Colorimetric:The oxidation of sample glucose is catalyzed by glucose oxidase to form hydrogen peroxide and gluconate.

Setup Schedule

Daily/STAT

Report Available

within 24 hrs

Reference Range

65-99 mg/dL Critical values: Age Less than 2 days: Less than 35 or greater then 451 mg/dL, Age greater than 2 days: Less than 65 or greater then 451 mg/dL

Clinical Significance

Glucose measurements are used in the diagnosis and treatment ofcarbohydrate metabolism disorders including diabetes mellitus, neonatalhypoglycemia, idiopathic hypoglycemia, and pancreatic islet cellcarcinoma.

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.