#Rapelay game onliine skin
Substances on Your SkinĪnything you touch or put on your skin can end up in your blood sample and then on your test strip. If you have been exposed to colder temperatures and your hands do not feel warm, wash and hold them under warm water before taking a test to improve blood flow and reduce meter errors. This means taking them with you wherever you go to avoid leaving them in a hot or cold car. If this is of concern, confirm the altitude rating for your device.Īccuracy Tip: Keep test strips at room temperature and keep the container closed so your strips are protected from the elements.
Some studies have shown devices to over or under estimate glucose when testing at high altitudes. High temperatures can make it easier for you to become dehydrated and concentrate (elevate) glucose levels, while low temperatures may affect circulation and lower blood flow to testing sites. Your body also reacts differently at different temperatures. Temperature and humidity extremes can cause the enzyme activity to decrease and affect the accuracy of results. The chemistry of your test strips, as well as your own blood flow and composition, can be affected by the conditions of your environment.Īn active component in the test strip chemistry, called an enzyme, can be sensitive to temperature and humidity conditions. Also make sure that you’re using tests strips that have not expired and are made specifically for your meter model. Test strip designs may vary, so it’s important to understand where the blood sample should be applied to avoid testing errors or inaccurate results. Have contaminants (oil, lotion, food) on the sample areaĪccuracy Tip: You should always keep your test strips in their container, stored at the temperature specified by the manufacturer.Inaccurate results can come from test strips that: The meter then converts that into a concentration of glucose to give you a reading.īecause this process is so complicated, your test strips can be very sensitive to variables. This releases electrons, creating an electrical current. When you use a test strip, the glucose in your blood interacts with enzymes on the strip. 8 Factors That Can Affect Glucose Meter Accuracy Test Strips
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Their most recent draft guidance represents their current thinking on accuracy and relies heavily on the ISO guidelines. The FDA, which oversees products cleared in the U.S., has its own system accuracy recommendations. It also requires 99% of results to fall within zones A or B of the Consensus Error Grid. For a system to meet the latest ISO 15197:2013 accuracy standard, 95% of blood glucose results must be within 15% (for values equal to or greater than 100 mg/dL) and 15 mg/dL (for values below 100 mg/dL). The standards set by the organization are intended to ensure quality, safety, and efficiency, so that you can be confident in your purchases.īlood glucose meters are one of the many products with ISO standards.
ISO, also known as the International Organization for Standardization, is responsible for developing and publishing specifications for products and services. So, if your lab result says that your blood glucose is 100 mg/dL, your meter might report your results as 85 mg/dL or 115 mg/dL and still be considered accurate. Without going into detail on how your circulatory system works, there are other factors that may cause the two readings to vary slightly, but typically a result from a meter that’s within 15-20% of your lab reading is considered accurate. Blood glucose meter test results are not exact measures, but they’re designed to give you accurate readings for daily treatment decisions when you’re not at a doctor’s office. Lab tests generally demonstrate a higher level of accuracy than personal blood glucose meters, but even these machines can have a slight margin of error. Virtually all home glucose meters factor in the difference of using a whole blood sample while providing a test result that is considered plasma equivalent. In a lab test performed by clinical staff, the sample is typically drawn from a vein in your arm and processed to remove red blood cells, so only the plasma is tested. Personal meters measure your blood glucose using a sample from your fingertip (or alternate site), and then analyze the whole blood, including red blood cells and all.
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Laboratory tests performed by professional healthcare providers.How Blood Glucose Accuracy is Determinedīlood glucose is measured primarily in two ways:.Since your readings determine your insulin doses, diet choices, and other health factors, having an accurate blood glucose meter is crucial for managing your diabetes.