Sign In
St. John Health System
Lab Catalog


Index:

Hemoglobin A1C (Glycosylated)

Order Name A1C HPLC
Test Number: 5002400
Revision Date 11/06/2023
Test Name Methodology LOINC Code
Hemoglobin A1C (Glycosylated)
High Performance Liquid Chromatography 17856-6 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1 mL (0.5) Whole Blood EDTA (Lavender Top) Refrigerated
Instructions Patient does not need to be fasting. Specimen stability: Ambient 8 hours. Refrigerated 7 days.
Frozen specimens unacceptable.
Testing not indicated for patients less than 6 months of age.
GENERAL INFORMATION
Testing Schedule Mon - Fri 
Expected TAT 1-2 days 
Clinical Use Useful for assessing the average blood glucose level for the two months preceding the assay. 
CPT Code(s) 83036
Internal Comments changed from detail to the new a1c with mean gluc group test -jk 4/8/16
3/20/17 change loinc from 4548-4 to 17856-6 per Sonya D. Bruening
11/6/23 updated dept to Hemo per Liz - hdm
Service Provided By Labcorp Oklahoma, Inc.
Lab Section Hematology