Glucose, Plasma [484X]

Test Code

148327

CPT Codes
82947

Preferred Specimen

1 mL plasma collected in a fluoride oxalate (gray-top) tube

Patient Preparation
Fasting required.
Fasting is defined as no consumption of food or beverage other than water for at least 8 hours before testing.

Minimum Volume

0.5 mL

Other Acceptable Specimens

Plasma collected in sodium or lithium heparin (green-top) tube • 1 whole tube whole blood collected in a fluoride oxalate (gray-top) tube

Instructions

Plasma submissions must be separated from cells; transfer to a sterile, plastic, screw-capped vial(s). Ship room temperature.

Whole blood (acceptable): Collect 1 gray-top (fluoride oxalate) tube. Send whole blood in original tube. Ship on refrigerated coolant.

Transport Container

Plastic screw-cap vial

Transport Temperature

Plasma: Room temperature
Whole blood: Refrigerated (cold packs)

Specimen Stability

Plasma
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days

Whole blood
Room temperature: 24 hours
Refrigerated: 72 hours
Frozen: Unacceptable

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 (SP)

Setup Schedule

Set up: Sun a.m., nights; Mon-Fri (all shifts), Sat a.m.; Report available: Next day

Limitations

Glucose levels may be depressed if sample is left on clot for an excessive length of time.

Reference Range

65-99 mg/dL

Clinical Significance

Plasma 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.

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.