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Doctor insights on: How Reliable Are Fingerstick Blood Tests

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How reliable are fingerstick blood tests?

How reliable are fingerstick blood tests?

Very reliable: There is a specific technique that miust be followed when doing finger sticks. If the procedure is properly performed the results are quite reliable. They will be within about 5% of a simultaneous venous blood test. ...Read more

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Blood Tests (Definition)

Blood is usually drawn from your ...Read more


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How reliable are blood tests that look for monoclonal gammopathy in elevated ImM levels ? Are false negatives possible?

Very: the testing for gammoparhy at at the present time is very sensitive. The means by how this gets measured and analyzed is so sensitive that I can t out all of the different Antibody types. ...Read more

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How reliable are genital herpes blood tests vs cultures?

How reliable are genital herpes blood tests vs cultures?

Active vs past: Blood tests can detect exposure to the herpes virus but do not tell if there is active infection. Molecular testing of the affected cells/tissue is more practical than culture for ascertaining active infection. ...Read more

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Is immunicap testing reliable for allergy in kids with severe excema? He already did skin prick and blood tests for specific allergies

Is immunicap testing reliable for allergy in kids with severe excema?
He already did skin prick and blood tests for specific allergies

Helps some: All allergy related tests have benefits & limitations. Any finding of an elevated IgE response to a particular food is worrisome and worthy of excluding that food. Elevated IgG levels to foods do not always correlate with the kids actual responses to that food. This or other tests can provide a guide to your food selections so you can eliminate candidate foods & see if it makes a difference. ...Read more

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Are occult blood tests for colon cancer reliable?

Are occult blood tests for colon cancer reliable?

Screening: It is a good start specially of yo had before and they were normal. ...Read more

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Are blood tests for allergy/IgE levels to foods considered reliable? Paranoid over certain foods and want to put fears to rest and liberalize my diet.

Are blood tests for allergy/IgE levels to foods considered reliable? Paranoid over certain foods and want to put fears to rest and liberalize my diet.

False positives: If the result of either the Allergy skin test or specific IgE test is negative then it's very reliable. Positive results on the other hand are only accurate 40-60% of the time so would need to be matched with specific allergy symptoms upon eating the food in question. Screening for a bunch of foods without a thorough history is therefore frowned upon. Testing for Celiac somewhat different. ...Read more

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Blood tests of levels pancreadits?

Blood tests   of levels  pancreadits?

Pancreatitis: Typical tests done include amylase and lipase. Amylase can be elevated due to other problems, so lipase is more specific. Any elevation indicates a problem. Lab values are specific to the lab used. Severe pancreatitis can elevate the lipase into the 1000's. Even a small elevation above normal can cause severe pain. ...Read more

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Do i need to fast before blood tests?

Do i need to fast before blood tests?

Depends: Depending on what kind of blood tests are being done, you may need to fast. If you are having a metabolic panel, liver panel or cholesterol panel you will need to fast. Probably would be best if you check with your ordering physician to make sure that you understand what you need to do. This will make you avoid potentially abnormal results or the need for a repeat test later. ...Read more

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How often are blood tests inaccurate?

How often are blood tests inaccurate?

It depends: What is your idea of "accurate"? The lab test results need to be interpreted in the context of the clinical condition. Different tests have different sensitivity, specificity and predictive values. These characteristic vary with the population under consideration, e.g., the HIV screening tests have different performance when used on drug addicts vs. Observant nuns. ...Read more

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What for m v. C. Mean for blood tests?

What for m v. C. Mean for blood tests?

Mean Cell Volume: You probably meant mcv. Mean corpuscular volume or mean cell volume - MCV is a measure of the average red blood cell volume. In case of anemia - it can help differentiate between different types of causes of anemia. ...Read more

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Can recent chocolate affect blood tests?

How recent?: If you fasted 12 hours before the test, a moderate intake of chocolate, prior to that, is not likely to affect test results. ...Read more

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I want to ask if my blood tests are normal?

I want to ask if my blood tests are normal?

Send results: Please include the results in a question and we can tell you if they are normal. ...Read more

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How much time can blood tests detect drugs?

How much time can blood tests detect drugs?

Depends: It is usually urine that is tested for drugs of abuse. Different drug have different elimination times and it also depends on the chronicity of use. In general cocaine has the fastest elimination and THC (cannabis) the longest. In a chronic user THC may be positive for month after last use. ...Read more

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Does weed have any effect on your blood tests?

Depends: Blood tests for weed can detect use of the drug. Weed does not materially affect common lab test results. See this site for more info. http://www.webmd.com/mental-health/marijuana-use-and-its-effects. ...Read more