Hemoglobin A1c

Hemoglobin A1c

Test Code

496
83036
CPT Code is subject to a Medicare Limited Coverage Policy and may require a signed ABN when ordering.
496
83036
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

Hemoglobin A1c - To assist with control of blood glucose levels, the American Diabetes Association (ADA) has recommended glycated hemoglobin testing (HbA1c) twice a year for patients with stable glycemia, and quarterly for patients with poor glucose control. Interpretative ranges are based on ADA guidelines.

Test Resources

Algorithm

Staging presymptomatic patients using Diabetes Type 1 Autoantibody Panel

Algorithm

Suggested Use of the 1,5-AG Test

Algorithm

Testing for Comorbidities and Complications of Chronic Kidney Disease

Clinical Focus

Polycystic Ovary Syndrome (PCOS)

Topic Brief

Laboratory Diagnosis of Peripheral Neuropathy

Test Guide

Laboratory Testing for Chronic Kidney Disease Diagnosis and Management

Test Guide

Laboratory Testing for Diabetes Diagnosis and Management

Test Summary

Cardiometabolic Disease Assessment (CMDA) Panel

Test Details

Methodology

Turbidimetric Inhibition Immunoassay

Reference Range(s)

<5.7 %

Alternative Name(s)

A1c,HA1c,Hgb A1c

LOINC® Codes, Performing Laboratory

Service Area must be determined

Methodology

Turbidimetric Inhibition Immunoassay

Reference Range(s)

<5.7 %

Alternative Name(s)

A1c,HA1c,Hgb A1c
Service Area must be determined

Preferred Specimen(s)

1 mL whole blood collected in an EDTA (lavender-top) tube

Minimum Volume

0.5 mL

Transport Container

EDTA (lavender-top) tube

Transport Temperature

Room temperature

Specimen Stability

  • Room temperature: 7 days
  • Refrigerated: 7 days
  • Frozen: 6 months

Reject Criteria

Sodium fluoride/oxalate (gray-top) tube • Heparinized plasma

Setup Schedule

Service Area must be determined
1 mL whole blood collected in an EDTA (lavender-top) tube
0.5 mL
EDTA (lavender-top) tube
Room temperature
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 6 months
Sodium fluoride/oxalate (gray-top) tube • Heparinized plasma
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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