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Meter Accuracy

BGM Accuracy Comparison: Which Meters Pass the Tests?

This chart presents reported blood glucose meter study results. Each result applies to the models and conditions studied; it does not establish a ranking of every meter currently sold or a direct comparison with CGM accuracy.

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Medical Disclaimer: This content is for informational purposes only. Always consult your healthcare provider before making health decisions.

BGM accuracy — quick summary

Quick answer

Published meter-study results should be read with their study protocols, model names and dates. Results from separate studies do not establish one universally most accurate meter. Check the current instructions for the model you use.

How BGM accuracy is measured

The 2018 DTS surveillance report studied 18 blood glucose monitoring systems in three studies; six met the study’s requirements in all three. This historical finding does not establish a ranking of current meters. The author abstract alone does not substantiate model-level percentages or reduce the complete pass rule to a single ISO threshold.

What the historical surveillance study establishes

Source: Klonoff and colleagues, 2018, author abstract. Eighteen systems were studied; six met requirements across all three studies. Model-level result tables are not reproduced without verified primary table data.

Check evidence for the exact meter model

Published meter-study results should be read with their study protocols, model names and dates. Results from separate studies do not establish one universally most accurate meter. Check the current instructions for the model you use.

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Published meter-study results should be read with their study protocols, model names and dates. Results from separate studies do not establish one universally most accurate meter. Check the current instructions for the model you use.

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Choosing a meter

Compare the exact model’s current instructions, available strips, intended use and applicable performance evidence with your care team. Brand, price and an older model’s study result do not establish current performance.

Accu-Chek Guide

Check current manufacturer specifications and strip availability for the exact Roche meter.

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BGM vs CGM accuracy — different questions

A blood glucose meter measures capillary blood from a fingerstick; a CGM measures interstitial glucose and provides continuous trends. Percentages reported using different study methods do not by themselves establish a clinical accuracy ranking. Follow your device instructions and care plan when readings need confirmation.

Frequently asked questions

What is the most accurate blood glucose meter?
Published meter-study results should be read with their study protocols, model names and dates. Results from separate studies do not establish one universally most accurate meter. Check the current instructions for the model you use.
Are cheap glucose meters accurate?
Price alone does not establish meter accuracy. Check the exact current model and its evidence; unsupported model-level percentages are not reproduced here.
Is a fingerstick meter more accurate than a CGM?
Blood glucose meters measure capillary blood from a fingerstick; CGMs measure interstitial glucose and provide continuous trends. Different study metrics do not establish that one is universally more accurate. Follow your device instructions and care plan when readings need confirmation.
Why did so many FDA-cleared meters fail the DTS study?
The surveillance study used retail systems and found differing results. Its abstract does not establish the cause of any individual system’s failure. Do not infer manufacturing or inventory problems without direct evidence.

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Medical source review, 25 October 2026. Sources apply to their named models, populations and endpoints: DTS 2018 author abstract.