Glucose, Random [8917X]

Test Code

148321

CPT Codes
82947

Preferred Specimen

1 mL random serum collected in a serum separator tube (SST)

Minimum Volume

0.5 mL

Other Acceptable Specimens

Whole blood (Minimum 1 full tube) collected in a sodium fluoride/oxalate (gray-top) tube • Random plasma collected in a sodium or lithium (green-top), or sodium fluoride/oxalate (gray-top) tube

Instructions

Serum and plasma submissions must be separated from cells.

Transport Container

Plastic screw-cap vial

Transport Temperature

Serum or plasma: Room temperature
Whole blood: Refrigerated (cold packs)

Specimen Stability

Serum
Room temperature: 4 days
Refrigerated: 7 days
Frozen: 28 days

Fluoride/oxalate plasma
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days

Fluoride/oxalate whole blood
Room temperature: 24 hours
Refrigerated: 72 hours
Frozen: Unacceptable

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 (SP)

Setup Schedule

Set up: Daily; Report available: Next day

Limitations

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

Reference Range

<140 mg/dL

Clinical Significance

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
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

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.