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Accuracy of Three Commercial Home-Use HbA1c Tests

HumanInsight Accuracy of Three Commercial Home-Use HbA1c Tests

Diabetes Technol Ther. 2022 Jun 28. doi: 10.1089/dia.2022.0187. Online ahead of print.


BACKGROUND: The COVID-19 pandemic and the rapid expansion of telemedicine have increased the need for accurate and reliable capillary HbA1c testing. Nevertheless, validation studies of commercially available products suitable for home use have been in short supply.

METHODS: Three commercial home-use capillary blood sample HbA1c tests (Home Access, CoreMedica, A1cNow+) were evaluated in 219 participants with type 1 or type 2 diabetes (aged 4-80 years, HbA1c 5.1%-13.4% [32-123mmol/mol]) at four clinical sites. Comparisons were made between HbA1c measurements from the commercial tests and paired venous samples for which HbA1c was measured at two central reference laboratories. The primary outcome was percentage of commercial HbA1c values within 5% of the corresponding reference values.

RESULTS: HbA1c values were within 5% (relative difference) of paired reference values for 82% of Home Access samples, 29% of CoreMedica samples, and 46% of A1cNow+ samples. Absolute differences were within 0.3% of the reference value for 75% of Home Access samples, 28% of CoreMedica samples, and 44% of A1cNow+ samples and exceeded 0.5% for 8%, 55%, and 37%, respectively.

CONCLUSIONS: None of the commercial home-use HbA1c tests produced the National Glycohemoglobin Standardization Program goal of ≥90% measurements within 5% of a DCCT venous reference. However, the Home Access product performed substantially better than the CoreMedica or A1cNow+ products. Telemedicine is likely to persist as a mainstay of diabetes care well after the COVID-19 era. As such, accurate home-based HbA1c assessment represents an urgent need for the diabetes community.

PMID:35763337 | DOI:10.1089/dia.2022.0187

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