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Test Code A1CC Hemoglobin A1c

Important Note

Medicare frequency limitations exist for this test in addition to diagnosis requirements. Click on link for list of medically necessary diagnoses: http://www.munsonhealthcare.org/medical-necessity. Click on link for Advance Beneficiary Notice of Noncoverage form: Advance Beneficiary Notice of Noncoverage

EHR Test Codes

  Test Code Test Name
Atlas A1CC HbA1c w/eAG
Cerner HA1C Hemoglobin A1c

 

Specimen Requirements

Preparation of Patient: 

None

 

Container Type: 

3 mL EDTA lavender top tube

Specimen Type:

EDTA Whole Blood

 

Specimen Volume: 

3 mL of EDTA whole blood minimum 1 mL

 

Specimen Handling/Transport:

Do not aliquot.  Transport ambient room temperature

 

Specimen Stability/Storage:

3 days ambient room temperature

 

Performing Laboratory

Munson Medical Center Laboratories

Priority, Frequency, & Turnaround

Priority

Non-Emergent

 

Frequency

Monday through Friday, Sunday

 

Turnaround

0 - 2 Days

Methodology

Capillary Electrophoresis

Reporting

Reference Range

4.2-5.8%

 

Interpretive Data:

Hgb A1c
Hemoglobin A1c values of 5.7 - 6.4 percent indicate an increased risk for developing diabetes mellitus. In diabetic patients, HbA1c goals should be discussed with healthcare provider.Disorders which decrease red cell survival time may cause falsely low results.

eAvg Glucose
Calculations of eAG have not been statistically validated in the following patient populations: Type 2 diabetics, non Caucasians, children, pregnant women and those with renal impairment. Disorders which decrease red cell survival time may cause falsely low results.
 

Critical Decision

None

Clinical Significance

Hemoglobin glycation is a non-enzymatic reaction between the intra-erythrocyte glucose and the N-terminal amino-group of the hemoglobin ß chains. This reaction takes place during the entire life of the red blood cells. The rate of glycated hemoglobin formation is related to the glycemia insofar as the intra-erythrocyte glucose concentration does not depend on insulin but only on the glycemia. It accumulates in red blood cells during the 120 days of their life.

 

The level of glycated hemoglobin corresponds to the "integration" of all the glycemic variations during the previous weeks. It can be used:

- as an index of diabetes control. This quantification allows to evaluate the middle term efficiency of treatments,

- as an aid in the diagnosis of diabetes mellitus and as an aid in the identification of patients at risk for developing diabetes mellitus.

CPT Code(s)

83036