Glucose | Test Detail | Quest Diagnostics

Glucose

Test Code

483

CPT Code(s)

82947

CPT Code is subject to a Medicare Limited Coverage Policy and may require a signed ABN when ordering.

Test Code

483

CPT Code(s)

82947

CPT Code is subject to a Medicare Limited Coverage Policy and may require a signed ABN when ordering.

Not offered in Quest Diagnostics Nichols Institute (IFD) – San Juan Capistrano. Please provide SERVICE AREA INFORMATION to find available tests you can order.

In-home collection may be available in your area for purchase through Quest Mobile.

Clinical Significance

Glucose - 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.

Test Resources

Clinical Focus

Polycystic Ovary Syndrome (PCOS)

Test Details

Patient Preparation

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

Methodology

Spectrophotometry (SP)

Reference Range(s)

Fasting Reference Interval	65-99 mg/dL
Non-fasting Reference Interval	65-139 mg/dL

LOINC® Codes, Performing Laboratory

Service Area must be determined

Patient Preparation

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

Methodology

Spectrophotometry (SP)

Reference Range(s)

Fasting Reference Interval	65-99 mg/dL
Non-fasting Reference Interval	65-139 mg/dL

LOINC® Codes, Performing Laboratory

Service Area must be determined

Preferred Specimen(s)

1 mL serum

Alternative Specimen(s)

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

Collection Instructions

Serum and plasma submissions must be separated from cells

Transport Container

Serum separator tube (SST)

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

Reject Criteria

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

Setup Schedule

Service Area must be determined

Preferred Specimen(s)

1 mL serum

Alternative Specimen(s)

Minimum Volume

0.5 mL

Collection Instructions

Serum and plasma submissions must be separated from cells

Transport Container

Serum separator tube (SST)

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

Reject Criteria

Setup Schedule

Service Area must be determined

Not offered in Quest Diagnostics Nichols Institute (IFD) – San Juan Capistrano. Please provide SERVICE AREA INFORMATION to find available tests you can order.

In-home collection may be available in your area for purchase through Quest Mobile.

Test Details

Clinical Significance

Test Resources

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.

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