What is the difference between plasma glucose and whole blood glucose?
plasma- The estimation of whole blood glucose levels are usually 10-15% lower than plasma glucose alone. The glucose concentration in the water that makes up plasma is equal to that of erythrocytes. Plasma has greater water content than erythrocytes and, therefore, exhibits higher glucose levels than whole blood.
Why fasting glucose level in whole blood is lower than in serum?
Glucose concentration may be determined in whole blood, plasma, or serum samples. If whole blood is used, the concentration will be lower than if plasma or serum is used. This is due to the greater water content of the cellular fraction.
What is the difference between capillary blood glucose and venous blood glucose?
The level of capillary blood glucose is comparable to arterial blood glucose level while venous plasma glucose level is the estimate glucose after utilization of glucose by tissues. The remaining amount returns to the venous side. So on lower side, change in concentration depends on tissue extraction of glucose.
Is blood sugar level the same as blood glucose level?
Your blood sugar levels, also known as blood glucose levels, are a measurement that show how much glucose you have in your blood. Glucose is a sugar that you get from food and drink.
Why is plasma preferred over serum for glucose?
Specimens can be processed more quickly, shortening the turnaround time for test results. There is a potentially higher sample volume yield with plasma, with approximately 15-20% more plasma obtainable from whole blood than with serum.
Why capillary blood glucose is higher than venous blood glucose?
Accordingly, the level of arterial blood glucose or postprandial capillary blood glucose is higher than that of postprandial venous blood glucose due to capillaries close to an artery (Figure 1).
What is serum glucose test?
The glucose serum is the simplest and most direct single test available to test for diabetes. The test measures the amount of glucose in the fluid portion of the blood. It is called a “serum” test due to this fluid portion of the blood. There are multiple components to the bloodstream.
What is the advantage of using serum over whole blood?
In most cases serum and plasma concentrations of analytes are the same. The choice depends mostly on the policy of the hospital or the availability of the test tubes in the ward. Some of the advantages of plasma over serum are large volume, no delayed clotting, less risk of haemolysis.
Why is glucose estimation from plasma not from serum?
In conclusion, although the differences in plasma and serum glucose is not yet clearly revealed, measurement of glucose in plasma allows samples to be centrifuged promptly without waiting for the blood to clot, and values can be measured immediately to avoid glycolysis.
Is capillary blood glucose accurate?
Accuracy of capillary glucoses was assessed using the International Organisation for Standardisation (ISO) 15197 standard, which states that 95% of the individual results for the glucose meter shall fall within ±0.83 mmol/L of the results at glucose concentrations ⩽4.1 and ±20% at glucose concentrations >4.1 mmol/L.
Can venous blood be used for glucometer?
Conclusion: Using venous blood sample and measuring the glucose level in it by glucometer is an acceptable and advisable method, and capillary blood glucose measurement by using glucometer is not recommended for patients in coma.
How much difference is there between glucometer and lab test?
Meter Accuracy Reality In order to be considered “accurate” and thus approved for use in at-home testing scenarios, the FDA requires that blood glucose meters provide: 99% of blood glucose measurements within 20% of lab results. 95% of blood glucose measurements within 15% of lab results.
What is the most accurate test for blood sugar?
The FPG blood test measures your blood glucose level at a single point in time. For the most reliable results, it is best to have this test in the morning, after you fast for at least 8 hours.
What’s the difference between blood glucose and HbA1c?
The HbA1c develops when haemoglobin, a protein within red blood cells that carries oxygen throughout your body, joins with glucose in the blood, becoming ‘glycated’. For people with diabetes this is important because the higher the HbA1c, the greater risk of developing diabetes related complications.
What is the difference between glucometer and lab test?
Laboratory glucose testing is done on plasma (thus without the influence of hematocrit) and under more controlled conditions. This means that laboratory results are more accurate than your glucometer’s readings. The difference can be higher or lower than your actual values. But you don’t have to worry about this.
What is the difference between serum and whole blood?
What is Serum Blood? Serum blood is not whole blood. It’s a portion of your blood that is taken once coagulation occurs. It can be used to test for specific substances in a person’s blood, and it’s often used in forensic matters.
Why is plasma preferred over serum for many stat lab tests?
Faster turnaround of results is particularly vital for STAT testing, in which rapid decisions are necessary for critically ill patients. Additionally, plasma more accurately reflects the patient’s in-vivo state and provides a higher volume yield from the sample.
Why is serum glucose higher than whole blood?
Red blood cells have higher concentration of protein than serum and serum has higher water content and more dissolved glucose than whole blood. To obtain blood glucose in serum from figures in whole blood, it is multiplied by 1.15.
What is the normal range of serum glucose?
Thirst.
What is the normal range of fasting blood glucose?
Fasting blood sugar levels. A healthcare professional may recommend using a glucometer to test daily levels of fasting blood sugar.
Is a blood glucose level of 101 too high?
Therefore, according to the chart above, if the 101 mg/dL blood sugar level was from a Fasting Glucose Test, then it may indicate prediabetes. If the test result of a 101 mg/dL blood sugar level was from a Random Glucose Test, then the result would indicate it to be in the normal range.
What is the perfect glucose level?
The normal blood sugar (glucose) level for a healthy adult (without diabetes) should be less than 126 mg/dL (milligrams per deciliter) or 6 mmol/L (millimole per litre) before fasting and meals, and below 200mg/dL (or 11 mmol/L) two hours after meals.