Impact of Implementing Point of Care Hemoglobin A1C Testing in an Obstetrics Outpatient Clinic

Abstract

Abstract Hemoglobin A1C ≥ 6.0% is associated with increased risk of adverse outcomes in pregnant, diabetic patients and is recommended as a secondary measure of glycemic control in pregnant patients by the American Diabetes Association. However, the utility of A1C point of care testing (POCT) during pregnancy to facilitate rapid counseling and diabetes care, particularly in relatively low-income transient patient populations is unknown. We performed a single center, retrospective analysis of patients presenting to an out-patient obstetrics office with routine, In-lab A1C (n= 70) testing and after the implementation of POCT for A1C (n=75). Demographics, results, physician referral to a nutritionist, counseling, and outcomes were retrieved from the electronic medical record. 9% and 23% of the In-lab group and POCT respectively were referred for nutrition services (p=0.02). 22% of the In-lab group and 42% of the POCT groups received immediate counseling (p<0.01). An inverse correlation was observed between entry A1C and the weeks at delivery with a Pearson r of -0.39 (-0.58-0.16) for the In-lab group and -0.38 (-0.57--0.14) for the POCT group. In conclusion, the implementation of POC A1C testing was associated with immediate counseling and management of pregnant patients.