Which is higher peripheral blood glucose or venous blood glucose?

Hello! Fasting venous blood collection and finger prick peripheral blood collection are two commonly used ways to measure blood glucose, and it cannot be said that which one is more accurate, because the two reflect the blood glucose value of different blood vessels, the former reflects the blood glucose value of venous blood, and the latter reflects the blood glucose value of capillary blood.

Usually the capillary blood glucose value is slightly higher than the venous blood glucose value, because our body's physiological activities and exercise need to consume energy, and under normal circumstances, glucose is used to provide energy, that is, glucose needs to be consumed. Glucose is transported to all parts of the body with blood circulation (large arteries, small arterioles, capillary veins, veins) for use by tissues and organs, and the lower the blood glucose value is, that is, the large arteries, small arterioles, capillary veins, veins.

However, when using an automatic biochemical analyzer and a blood glucose meter to test the blood glucose of the blood vessels in the same part at the same time, the blood glucose value is also different due to the different principles of the reagent, and the value of the former is generally higher than that of the latter (about high, and the first drop of finger blood is higher than the second drop of blood (about high.

Place. Hello! Fasting venous blood collection and finger prick peripheral blood collection are two commonly used ways to measure blood glucose, and it cannot be said that which one is more accurate, because the two reflect the blood glucose value of different blood vessels, the former reflects the blood glucose value of venous blood, and the latter reflects the blood glucose value of capillary blood.

Usually the capillary blood glucose value is slightly higher than the venous blood glucose value, because our body's physiological activities and exercise need to consume energy, and under normal circumstances, glucose is used to provide energy, that is, glucose needs to be consumed. Glucose is transported to all parts of the body with blood circulation (large arteries, small arterioles, capillary veins, veins) for use by tissues and organs, and the lower the blood glucose value is, that is, the large arteries, small arterioles, capillary veins, veins.

However, when using an automatic biochemical analyzer and a blood glucose meter to test the blood glucose of the blood vessels in the same part at the same time, the blood glucose value is also different due to the different principles of the reagent, and the value of the former is generally higher than that of the latter (about high, and the first drop of finger blood is higher than the second drop of blood (about high.

So you don't have to worry about which method is better, whether it is venous blood or peripheral blood can correctly reflect the blood sugar value, you just need to figure out the difference between your blood glucose meter and the test value of the hospital you visit.

Wishing you good health!

The blood glucose of the veins and the peripherals are collected by the same human blood vessels, so the blood glucose coefficient is the same.

Blood glucose meters are often used in diabetes monitoring, and blood glucose meters detect fingerstick blood, so are fingerstick blood glucose and venous blood glucose consistent? Theoretically, if the two are measured at the same time, they should be consistent, but in practice there are differences. In general, fasting capillary blood glucose is basically the same as venous blood glucose, but at 2 hours after meals, capillary blood glucose should be slightly higher than venous blood glucose.

Because venous blood glucose is collected from venous blood, and fingerstick blood sugar is blood collected from fingertip capillaries, blood flows from capillaries to veins, before reaching the veins, the body's tissues will use some blood sugar, and the result is that venous blood sugar is lower than capillary blood glucose, especially 2 hours after meals. But on the other hand, venous blood glucose testing uses plasma, excluding blood cells, while fingerstick blood glucose uses whole blood, including plasma and blood cells, where the blood sugar concentration in blood cells is lower than plasma, so the blood sugar of whole blood is lower than that of plasma, that is, capillary blood sugar is lower than venous blood glucose.

Venous blood glucose will have a higher blood glucose value than direct blood glucose; Because venous blood glucose is the average blood glucose of the person tested for 2 to 3 months, the accuracy is very high, and the direct blood glucose is just the blood glucose value at the time of the test, the accuracy is not high, and it is slightly lower than the venous blood glucose value.

It must be that the venous blood sugar may be higher, because the blood sugar on the fingertips is actually capillary blood glucose, and if the blood sugar rises suddenly, it may not be measured when the direct blood sugar is measured.

Fingerstick blood sugar will be a little higher. Fingerstick blood glucose measures the blood sugar inside the capillaries, which are the transit points for blood circulation and have a lot of nutrients.

Blood sugar in the fingerstick will be higher than the blood glucose level in the vein. The main reason for this is that venous blood glucose measures the blood sugar level in the human plasma, and the nutrients in it will be reduced.

The blood sugar in the fingertips is actually much higher than the blood sugar in the veins, because the sugar content in the blood sugar in the fingertips is very high, and the blood in this part is also very slow, so it must be paid attention to.

Fingerstick blood sugar and venous blood glucose, venous blood sugar is higher, and the blood sugar in venous blood sugar is more accurate, which can represent the overall blood sugar level, while the fingertips must be at the end of the human body and cannot represent the blood sugar status of the whole body.

Venous blood glucose and fingerstick blood glucose are both ways to detect blood glucose, but venous blood glucose and fingerstick blood sugar are not the same, so the results of the test will also be different. Venous blood glucose is to draw venous blood, and after centrifugation, extract glucose in serum for testing; Fingerstick blood glucose refers to the arterial blood or venous blood and tissue fluid at the end of the end, so it is the blood sugar of whole blood, so the blood glucose value of fingerstick blood is lower than that of venous blood glucose in the same period. However, if the capillary blood glucose value measured by a blood glucose meter fluctuates by 10%-18% up or down the venous blood glucose value, it can be used as a reference range.

Venous blood glucose is the standard for diagnosing diabetes, but because venous blood sampling is inconvenient, fingerstick blood glucose is generally recommended to assess blood glucose control.

In general, venous blood glucose is more accurate. Fingerstick blood sugar will be affected by many factors, the quality of the blood glucose meter, and the non-standard detection process will cause inaccuracy. Venous blood glucose testing is recommended.

:handshake

Q: Why is there a difference between finger peripheral blood glucose and venous blood glucose?

A: The blood glucose meter measures the blood sugar of capillary whole blood (including red blood cells and blood paddles), while the hospital laboratory draws blood to measure the blood glucose of venous blood paddles after the red blood cells are separated. In fasting, the blood glucose level of the venous blood paddle is usually about 10% higher than the blood glucose value of the capillaries, but this is not "inaccurate", but the difference between the two should be.

After eating, the whole blood glucose concentration in the capillaries is higher than the blood glucose concentration of venous whole blood, but because the laboratory measures the blood glucose of the venous blood paddle, its value is a little higher than that of venous whole blood glucose.

I measure my blood sugar every day with a home blood glucose meterFasting blood sugar is the same as blood glucose two hours after a mealI always feel like I'm in good control. But when I went to the hospital for a physical examination, I checked my blood sugar and found outFasting venous blood glucose is venous blood glucose two hours after a meal.

Is my blood sugar measured inaccurate? Why is there such a big blood sugar gap between the two?

Here it is necessary to talk about the diagnostic criteria for diabetes, diabetes is diagnosed when there are symptoms of diabetes and random blood glucose or fasting blood glucose or oral glucose tolerance test (OGTT) 2-hour blood glucose, and it is generally accepted in clinical practice that fingerstick blood glucose (blood glucose) is 1 to 3 mmol l. at the same time higher than venous blood glucose

Venous blood glucose is also associated with timely delivery. If blood glucose is allowed to sit at room temperature, blood glucose levels will decrease to 1 hour due to the action of glucose glycolysis.

A blood glucose meter is recommended when there is a 20 difference between the blood glucose meter and the venous blood glucose value. Remember to pay attention to regular comparison when buying a blood glucose meter, usually once a month.

It will be used for the first time, not the first time you use it. Because the battery power, temperature, and humidity stored in the test strips can affect the accuracy and stability of the blood glucose meter, resulting in inaccurate blood glucose levels.

In order to reduce errors and ensure that fingerstick blood glucose is more accurate, there are 3 points to pay attention to when using a blood glucose meter:

First: Make sure the battery is fully charged

If the meter is not in use for a long time, it should be replaced after using the battery. At the same time, it is essential to avoid squeezing the fingers with difficulty so that the tissue fluid can be transferred to the bloodstream and affect the test results.

Second: the storage temperature of the test strip is generally 4 30 degrees

Store in a cool, dry place away from direct sunlight.

Third: Make sure your fingers are dry during the test

No sweat, disinfectant and other residues.

Therefore, it is essential to compare a blood glucose meter with a venous blood glucose value. Only test values are allowed to be used within the permissible margin of error. It would be a mistake to choose to compare with other machines.

Which blood sugar is higher than fingerstick blood sugar or venous blood glucose? Why? Fingerstick blood glucose and venous blood glucose, as long as the measurement method is correct, the measured data are also correct. In comparison, the blood glucose level on the fingerstick is slightly higher.

Let's take a look first, what is the normal value of blood sugar?

1. Fasting blood glucose value.

Normal fasting blood glucose: fasting whole blood glucose is millimolar liters (70,110 milligrams dliters) and plasma blood glucose is millimolar liters (70,125 milliliters). Diabetes mellitus is diagnosed when the fasting whole blood glucose is millimolar liters (120 milligrams) and plasma glucose is millimolar liters (140 milligrams).

2. Postprandial blood glucose value.

1 hour after a meal: blood sugar milliliters. At most, not exceeding; 2 hours after meals: blood glucose milliliters; It returns to normal after the third hour.

It is normal for fingerstick blood sugar to be a little higher than venous blood glucose.

The blood sugar measured in the fingerstick will be slightly higher than the venous blood glucose value, which is a normal phenomenon and you don't need to worry. Because the fingerstick blood glucose measured by the home blood glucose meter we usually use is the blood glucose value of whole blood, and after the hospital vein blood collection, the white blood cells and red blood cells in the blood will be filtered out, and only the plasma is left to measure the blood sugar, and the value will be slightly lower than the blood glucose value of the fingertip whole blood.

Fingerstick blood sugar is higher than the venous blood glucose value, which belongs to a healthy state, do not panic too much, the venous blood glucose test needs to be collected and measured by the medical staff of the hospital, and the fingerstick blood glucose can be measured by the patient's personal fingerstick blood collection, the method is simple, fast and convenient. Venous blood glucose is a better way to assess one's own glycemic control.

Home blood glucose meters generally need to be calibrated regularly to ensure the accuracy of the measurement results. If you want to correctly understand the balance coefficient of blood glucose, the best way is to pass the routine test of the hospital, and whether it is this blood sugar or venous blood glucose, blood must be collected on an empty stomach, so that the measured results are more accurate.

How do patients self-measure their blood glucose?

Prefer the ring finger: because the ring finger is less active than the rest of the fingers, the chance of infection is smaller. The thumb and index finger are more flexible, sensitive, and used the most, so the ring finger is preferred, followed by the middle finger or little finger.

The two sides of the finger belly are rich in blood vessels, the distribution of nerve endings is relatively small, the pain is relatively light, and the amount of blood is large. The nerve endings in the middle of the finger stomach are abundant and dense, and the blood is not filled on both sides.

So choose both sides of the finger belly, if there is a breakage, infection, scarring, then change the finger.

Can't "squeeze" when measuring: Many sugar friends like to squeeze the fingers of blood collection with their hands when measuring blood sugar, so that the blood volume will increase, in fact, this is not right, because when squeezing, the tissue fluid will be squeezed out, dilute the blood, and the measurement value will be low and not accurate enough.

No matter what kind of blood is used to measure blood sugar, it should be done on an empty stomach and should be tested regularly. Keep your blood sugar within the normal range so that high blood sugar doesn't affect your health.

Our blood flow is from arteries to capillaries to veins, and as the blood flows, the nutrients in the blood decrease, and the fingertips are mainly capillaries, so the blood sugar in the fingertips is significantly higher than the venous blood sugar.