The strip has touched blood — is that enough? Not always. A too-small blood drop can give an inaccurate blood sugar reading.
Does a tiny drop count?
Blood glucose test strips are designed to take a particular amount of blood. Use the blood-drop size stated in the instructions for your meter and test strip.
1. The right amount matters
Think of it like filling a measuring spoon: it needs enough of the ingredient to do its job properly. This comparison is only about having enough sample, not about how the meter works.
2. A small sample may not show an error
If the drop is only slightly too small, the meter may not always display an error message. That means blood touching the strip is not always the same as having enough blood for a reliable reading.
3. Repeat it if you are unsure
If you doubt whether there was enough blood, repeat the test and follow the instructions for that specific meter. The FDA also advises users to use the amount of blood specified for their meter and strips in its guidance on getting the most out of a blood glucose meter.
ISAW makes everyday health knowledge easier to understand. Learn more at ISAW Medical.
This article is for general education and does not replace personalised advice from a qualified healthcare professional.