WhatDoMyLabResultsMean.com

Diabetes / Glucose

Hemoglobin A1c (HbA1c)

Also known as: A1C, Glycated Hemoglobin

CPT 84443Quest 899LabCorp 004259
When to Seek Prompt Care

No common urgent flag from this test alone

What It Measures

This test checks the average amount of sugar in your blood. It looks at how much sugar has stuck to your red blood cells. This shows your average blood sugar level for the last two to three months.

Why It's Ordered

Doctors order this test to see if you have prediabetes or diabetes. It also helps people with diabetes keep their blood sugar levels in a healthy range.

Reference Range

Reference ranges for A1c can vary slightly between different laboratories, and interpretation may depend on individual factors.

Clinical Reference

Quest: 899
LabCorp: 004259
CPT: 84443
ICD-10: E03.9, E03.8, E04.0, E04.2, E05.90, E06.3, R94.6, R53.83

Medicare covers for thyroid disorder evaluation; ABN may be required for screening

Educational purposes only — This information is not a substitute for professional medical advice, diagnosis, or treatment. Always discuss your lab results with your healthcare provider.