At present, the main products of Hainice Biotechnology (Dandong) Inc. are blood glucose meters and test strips. The company serves the public with the production concept of "technology is people-oriented and striving for perfection". The product technology is constantly innovated, bringing the gospel of health to the vast number of users.
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How to Tell if Your Home Glucose Monitor Is Accurate? 4 Scientific Ways for Veri
Edit date：2026-08-07
Many people with diabetes wonder: Are readings from my home glucose monitor reliable? To judge a glucose monitor’s accuracy, four key dimensions are adopted: venous blood comparison, control‑solution validation, repeat testing, and standardized operation. Avoid common pitfalls to obtain authentic and credible blood‑glucose data.
I. Simultaneous Comparison with Hospital Venous Blood (Gold Standard for Accuracy)
Key note: Capillary finger‑stick blood ≠ venous blood. Sampling must be performed simultaneously for valid comparison.
Simultaneous‑sampling Test Method
Test in fasting status or 2 hours after meals. Measure capillary blood with your home glucose monitor while venous blood is drawn for hospital biochemical laboratory testing. Keep the interval between the two samplings within 5 minutes to prevent physiological blood‑glucose fluctuations from skewing comparison results.
Reference for industry‑accepted allowable error:
- When venous blood glucose ＜ 5.6 mmol/L: The difference between the monitor reading and the biochemical value shall not exceed ±0.83 mmol/L.
- When venous blood glucose ≥ 5.6 mmol/L: The relative deviation of monitor readings shall be within ±15%.
⚠️ Warning: Do not perform finger‑stick testing long after venous blood collection. Blood‑glucose levels change with physiological status, rendering the comparison meaningless.
II. Quick Self‑Check with Matching Control Solution
Control solution is specially formulated to verify whether the glucose monitor and test strips function properly, independent of human‑blood variables.
Use original manufacturer‑matched control solution: Follow the manufacturer’s instructions strictly with high‑ and low‑level control solutions supplied with the device. Measured values must fall within the reference range printed on the control‑solution label. For example, for a labelled range of 4.2‑5.6 mmol/L, test results must lie inside this interval.
Mandatory scenarios for control‑solution testing: Run a control‑solution test when opening a new batch of test strips, replacing batteries, after device drops or impacts, or whenever readings seem abnormal. This quickly identifies strip moisture damage or device malfunctions.
III. Repeat Testing to Evaluate Device Stability (Precision)
Stability means repeated tests on the same blood sample do not produce wildly fluctuating results. However, stability does not guarantee absolute accuracy.
Repeated tests on one drop of blood: Perform three rapid consecutive tests from the same blood drop. The relative deviation of each reading shall be less than 5%. Large fluctuations should first be attributed to damp strips or operational errors before suspecting hardware failure.
Tip: Complete retests rapidly to avoid blood coagulation and oxidation. Do not squeeze fingers hard, as this introduces interstitial fluid.
Multi‑day observation under consistent conditions: When physical status is stable (e.g., early‑morning fasting), record blood‑glucose values for three consecutive days and watch for unexplained large jumps.
IV. Standardize Operations to Avoid Human‑Induced Errors
Most inaccurate readings stem from procedural mistakes rather than defective hardware:
✅ Blood‑collection tips: Allow alcohol to evaporate fully after finger disinfection before lancing. Gently squeeze the sides of the finger; avoid forceful squeezing which dilutes samples with interstitial fluid, and ensure sufficient sample volume.
✅ Test‑strip storage: Store strips sealed, away from light, high temperature and humidity. Immediately recap the vial after removing a strip to prevent moisture‑related failure.
✅ Device maintenance: Wipe the test port with a soft cloth to remove residual blood and dust. Some models require code entry or chip insertion; always confirm that codes match those printed on the test‑strip packaging.
Disclaimer: Home‑use glucose monitors are intended solely for routine blood‑glucose monitoring and shall not replace hospital biochemical testing for diagnostic purposes. Seek prompt medical review in case of drastically abnormal readings.