Blood glucose meters like True Metrix and True Metrix Go are designed to give accurate results, but when an error code appears, it can cause confusion—especially if you’re about to make a critical decision like taking insulin or eating to correct a low. Knowing what these error codes mean offers several benefits: Accurate and faster troubleshooting, Prevents wasted supplies and unnecessary costs, and Better device reliability.
True Metrix Blood Glucose Meter Error Codes
| Error Code / Message | Meaning | Suggested Action |
|---|---|---|
| E-0 | Invalid hematocrit: < 20% or > 70% | Ensure proper sample handling; check test strip storage; if persists, consult healthcare provider. |
| E-2 | No sample detected or wrong/no strip used | Use a proper True Metrix strip; apply enough fresh capillary blood; repeat test with new strip. |
| E-3 | Test strip compromised: reused, expired, or contaminated | Discard strip, insert a new one; ensure clean hands and strip tip is dry. |
| E-5 | Strip error or extremely high glucose (> 600 mg/dL) | Retest with fresh strip; if error persists or result remains high, follow doctor’s advice. |
| Lo | Blood glucose below meter's measurable range (< 20 mg/dL) | Treat potential hypoglycemia; retest; seek medical help if confirmed. |
| Hi | Blood glucose above meter's range (> 600 mg/dL) | Retest at room temperature; consult healthcare provider if confirmed. |
| Meter doesn't power on or strip insertion fails | Possible dead battery, strip not fully inserted, or meter fault | Replace battery; insert strip correctly; if unresolved, call support. |
True Metrix Go Error Codes and Meanings
| Error Code / Message | Meaning | Suggested Action |
|---|---|---|
| E-0 | Invalid hematocrit (< 20% or > 70%) | Ensure proper blood sampling, verify strip storage; if persists, seek medical advice for possible anemia or dehydration |
| E-3 | Previously used, contaminated, or expired strip | Use fresh strips, sealed test strip; repeat test; contact support if error repeats |
| E-5 | Test strip error or blood glucose above 600 mg/dL | Retest with a new strip; if the error continues or BG remains high, call support at 1‑800‑803‑6025 and follow medical guidance |
| Lo | Blood glucose below meter’s measurable range (< 20 mg/dL) | Treat potential hypoglycemia promptly and retest with fresh strip |
| Hi | Blood glucose above detection range (> 600 mg/dL) | Wash hands, retest, and consult healthcare provider if high reading confirmed |