Sensitivity and Specificity of a Point of Care (POC) Glycohemoglobin (HbA1c) Test at 7% Cut Point Compared to Laboratory Test Results*
| POC test (%) | Laboratory | |
|---|---|---|
| HbA1c ≥7 (%) | HbA1c <7 (%) | |
| HbA1c ≥7 | 45 | 3 |
| HbA1c <7 | 10 | 41 |
| Total | 55 | 44 |
* Sensitivity (45 of 55), 81.8%; specificity (41 of 44), 93.2%; positive predictive value (45 of 48), 93.8%; false negative (10 of 55), 18.2%; false positive (3 of 44), 6.8%.