Glucose, Plasma

Test Code

38452

CPT Codes
82947<br>Limited Access Code

Preferred Specimen

1 mL plasma collected in 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, or plasma separator tube (PST) • 1 full tube whole blood in 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: Collect 1 gray-top (fluoride oxalate) tube. Send whole blood in original tube. Ship refrigerated (cold packs).

Transport Temperature

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

Specimen Stability

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, sodium heparin or fluoride/oxalate

Methodology
Spectrophotometry

Setup Schedule

Set up: Daily; Report available: Next day

Reference Range

65-99 mg/dL
Fasting Reference Interval

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.

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.