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25575 Hemoglobin A1C, Point of Care

Hemoglobin A1C, Point of Care
Test Code: A1C-POC
Synonyms/Keywords
​Point of Care A1c
Test Components
​Hemoglobin A1c, eAG
Useful For
Diagnosing diabetes and evaluation of long-term blood glucose concentration in diabetic patients.
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)
Pediatric Minimum Volume
(no repeat)
​No ​Whole Blood ​EDTA Lavender Top Tube (LTT) ​1.0 mL ​0.3 mL ​0.2 mL
​No ​Whole Blood ​Fingerstick ​1 uL ​1 uL ​1 uL
Specimen Stability Information
Specimen Type Temperature Time
Whole Blood​ ​ ​Ambient ​24 hours
​Refrigerate ​7 days
​Whole Blood Fingerstick ​Ambient ​<5 minutes
Performing Laboratory Information
Performing LocationDay(s) Test PerformedAnalytical TimeMethodology/Instrumentation
​Marshfield Phlebotomy Dept
​Monday through Friday
0700-1600
​<2 hours​Monoclonal Antibody Agglutination/DCA Vantage
Peds Endo: Marshfield,
Eau Claire, Rice Lake, Wausau, Minocqua
Monday through Friday
0800-1700
<2 hours​Monoclonal Antibody Agglutination/DCA Vantage​
Test Information
​Testing performed in Marshfield Phlebotomy Department and Peds Endocrinology/Telehealth-Marshfield, Eau Claire, Rice Lake, Wausau, Minocqua.
Reference Range Information
Performing Location Reference Range

​Marshfield Phlebotomy Dept and
Peds Endocrinology/Telehealth-Marshfield, Eau Claire, Rice Lake, Wausau, Minocqua

 

>= 18 years: 4.0-6.0%

Recent recommendations by American Diabetes Association (ADA):
-Criteria for diagnosing diabetes: HbA1c >=6.5%.
-HBA1c levels of 5.7-6.4% indicate an increased risk for developing diabetes.
​*Reference values have not been established for patients <18 years of age. ​
Interpretation
When diagnosing diabetes, an elevated level should be confirmed with repeat testing. American Diabetes Association (ADA) recommends HbA1c should be measured 3-4 times per year for type 1 and poorly controlled type 2 diabetes and 2 times per year for well-controlled type 2 diabetic patients.
 
HbA1c assay reflects long term fluctuations in blood glucose concentration, a diabetic patient who may have come in recent weeks under good control may still have a high concentration of HbA1c and conversely a diabetic patient previously under good control now poorly controlled may still have low concentrations of HbA1c.
 
In conditions with shortened erythrocyte lifespan (hemolytic anemia), HbA1c results will be decreased and affect will be dependent on the severity of anemia.  Patients with polycythemia or post-splenectomy may exhibit increased HbA1c levels due to longer erythrocyte lifespan.  HbA1c values in recently transfused patients may be falsely elevated.
 
Individuals with recent significant blood loss exhibit falsely low HbA1c values due to a higher fraction of young erythrocytes.
 
Abnormal life span of red blood cells as found in hemolytic anemia, polycythemia or post splenectomy may affect the levels of HbA1c.
Outreach CPTs
CPT Modifier
(if needed)
Quantity Description Comments
​83036
Synonyms/Keywords
​Point of Care A1c
Test Components
​Hemoglobin A1c, eAG
Ordering Applications
Ordering Application Description
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)
Pediatric Minimum Volume
(no repeat)
​No ​Whole Blood ​EDTA Lavender Top Tube (LTT) ​1.0 mL ​0.3 mL ​0.2 mL
​No ​Whole Blood ​Fingerstick ​1 uL ​1 uL ​1 uL
Specimen Stability Information
Specimen Type Temperature Time
Whole Blood​ ​ ​Ambient ​24 hours
​Refrigerate ​7 days
​Whole Blood Fingerstick ​Ambient ​<5 minutes
Useful For
Diagnosing diabetes and evaluation of long-term blood glucose concentration in diabetic patients.
Test Components
​Hemoglobin A1c, eAG
Reference Range Information
Performing Location Reference Range

​Marshfield Phlebotomy Dept and
Peds Endocrinology/Telehealth-Marshfield, Eau Claire, Rice Lake, Wausau, Minocqua

 

>= 18 years: 4.0-6.0%

Recent recommendations by American Diabetes Association (ADA):
-Criteria for diagnosing diabetes: HbA1c >=6.5%.
-HBA1c levels of 5.7-6.4% indicate an increased risk for developing diabetes.
​*Reference values have not been established for patients <18 years of age. ​
Interpretation
When diagnosing diabetes, an elevated level should be confirmed with repeat testing. American Diabetes Association (ADA) recommends HbA1c should be measured 3-4 times per year for type 1 and poorly controlled type 2 diabetes and 2 times per year for well-controlled type 2 diabetic patients.
 
HbA1c assay reflects long term fluctuations in blood glucose concentration, a diabetic patient who may have come in recent weeks under good control may still have a high concentration of HbA1c and conversely a diabetic patient previously under good control now poorly controlled may still have low concentrations of HbA1c.
 
In conditions with shortened erythrocyte lifespan (hemolytic anemia), HbA1c results will be decreased and affect will be dependent on the severity of anemia.  Patients with polycythemia or post-splenectomy may exhibit increased HbA1c levels due to longer erythrocyte lifespan.  HbA1c values in recently transfused patients may be falsely elevated.
 
Individuals with recent significant blood loss exhibit falsely low HbA1c values due to a higher fraction of young erythrocytes.
 
Abnormal life span of red blood cells as found in hemolytic anemia, polycythemia or post splenectomy may affect the levels of HbA1c.
For more information visit:
Performing Laboratory Information
Performing LocationDay(s) Test PerformedAnalytical TimeMethodology/Instrumentation
​Marshfield Phlebotomy Dept
​Monday through Friday
0700-1600
​<2 hours​Monoclonal Antibody Agglutination/DCA Vantage
Peds Endo: Marshfield,
Eau Claire, Rice Lake, Wausau, Minocqua
Monday through Friday
0800-1700
<2 hours​Monoclonal Antibody Agglutination/DCA Vantage​
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)
Quantity Description Comments
​83036
For most current information refer to the Marshfield Laboratory online reference manual.