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Doctor insights on: Dried Blood Spot Testing For Hiv

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Dr. James Dukelow
16 doctors shared insights

Hiv (Definition)

Hiv infection is caused by a retrovirus....This retrovirus binds to CD4 cells (for the most part). You may detect the virus by several different methods. An elisa test (enzyme linked immunosorbent assay). You may also detect it by doing a test referred to as a western blot (a gel protein electrophoresis). Thirdly by pcr (polymerase chain reaction) which ...Read more


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Can you get HIV from a dry blood spot on a tissue? I used it to wipe and saw it, wasn't my blood! Do I need testing? (The tissue was at my house).

Can you get HIV from a dry blood spot on a tissue? I used it to wipe and saw it, wasn't my blood! Do I need testing? (The tissue was at my house).

Not likely: For HIV to be infective....it needs to be in a medium that supports millions/billions of virons (think of it as having to get to a certain concentration). That's not going to be a spot on a piece of toilet tissue. Were talking fresh bodily fluids for the most part. Then, you need a receptive site for infection..probably not the one you described. Finally, the virus dies fast outside the body. ...Read more

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Multiple spots of blood found on a sandwich I was consuming. Concerned about HIV and other disease exposure. What is the risk or testing required?

Multiple spots of blood found on a sandwich I was consuming. Concerned about HIV and other disease exposure. What is the risk or testing required?

Blood spots: This could be from infected gums. How long has it been since your last dental examination and professional cleaning? Recommend 2 appointments. See hour Dentist for evaluation of your oral health. See hour Physician to discuss "HIV and other disease exposure." Be candid with both about your lifestyle, any meds that you take, and any diseases to which you think you may have been exposed. ...Read more

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Are these Fordyce spots or something nasty? I had a nude massage by a call girl 6 mo ago, but not have sexual intercourse. A week after, dr swab tested for (herpes), blood work hiv, std, all negative

Are these Fordyce spots or something nasty?  I had a nude massage by a call girl 6 mo ago, but not have sexual intercourse. A week after, dr swab tested for (herpes), blood work hiv, std, all negative

Please clarify: First none of the std tests are valid. They were all done way too soon to gave any accuracy from this simple encounter. Second getting a massage is in no way a risk for stds. ...Read more

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Can a pin head size dried stain of blood be tested for HIV and hep b? What's the technique / test called? If not, how much is needed?

Can a pin head size dried stain of blood be tested for HIV and hep b? What's the technique / test called? If not, how much is needed?

Infectious Disease: No testing would be done on a dried stain of blood. I know of no lab or process that would test such. And a dried stain of blood would not be contagious for HIV or hepatitis. ...Read more

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Possible dried blood spot on hand towel. Washed hands and then dried with said towel and then rubbed my eye. Hepatitis C risk? Need testing?

Possible dried blood spot on hand towel. Washed hands and then dried with said towel and then rubbed my eye. Hepatitis C risk? Need testing?

No risk: There is little or no risk from this sort of exposure. Hepatitis C is rare except in people who catch it by more direct blood exposure, such as sharing drug injection equipment with other persons. Don't worry about this event. ...Read more

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Might it be that a potassium blood testing also detect hiv?

Might it be that a potassium blood testing also detect hiv?

Potassium and HIV: Checking one's potassium level will give you no information on the HIV status of that person. The most common HIV tests look for HIV antibodies in your body, rather than looking for HIV itself. Ask your doctor for more information. ...Read more

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For the experts - might testing for my blood group also test if i'm HIV positive/negative?

For the experts - might testing for my blood group also test if i'm HIV positive/negative?

No: Tests for blood groups and HIV are very different. Blood group and HIV can be tested from the same blood sample, but before doing test for HIV you would be asked for your consent to do the test for hiv. ...Read more

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Why would urine be used to test for HIV and not blood? How accurate is urine for testing for hiv?

Blood is optimal: Blood tests are more sensitive, but antibodies are also present in the urine and collecting urine specimen is easier than collecting blood. Oral fluid can also be tested for HIV antibody. A positive urine screening test, like a blood screening test would need confirmatory testing, generally by testing blood. Urine can be used for confirmatory testing but a negative result may not be reliable. ...Read more

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How accurate r my results for HIV? Neg STI blood work @7wks & neg Oraquick rapid oral HIV test @10wks after risk. Testing again in 1mth, still worried

How accurate r my results for HIV? Neg STI blood work @7wks & neg Oraquick rapid oral HIV test @10wks after risk. Testing again in 1mth, still worried

Very accurate: The oral fluids HIV antibody test is the only one that sometimes takes 3 months to be positive. (All blood tests these days are conclusive by 4-8 weeks, depending on the specific test.) However, at 10 weeks your result is well over 95% accurate, so it is extremely unlikely you have HIV. Stay relaxed while you wait for your final test; it will be negative. Good luck and stay safe. ...Read more

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Low WBC of 3.2 repeated blood tests, still low next day. Doctor testing me for viral stuff. What's the chances I have HIV? No HIV risk factors.

Low WBC of 3.2 repeated blood tests, still low next day. Doctor testing me for viral stuff. What's the chances I have HIV? No HIV risk factors.

HIV: If you are fully aware of the risks of getting HIV infection and do not have any of the risk factors you do not have this illness. There are many possibilities for a low WBC and it sounds as if your doctor is evaluating you appropriately. Stick with them. ...Read more

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Had STD testing (blood draw) done for HIV which was "non reactive". I have eye floaters and lately white rings/ coated tongue. What is going on?

Had STD testing (blood draw) done for HIV which was "non reactive".  I have eye floaters and lately white rings/ coated tongue. What is going on?

Vitreous detachment: Floaters are usually secondary to vitreous detachment from the retina. This is a normal aging process and it can start as early as teens in a highly nearsighted person to into the 60's. But when you first notice it u need to see an eye md to make sure there are no retinal tears. Your mouth lesions may be candida and from a lot of stress and not necessarily HIV related. See your primary md. ...Read more

Dr. Ed Friedlander
1,461 doctors shared insights

Human Immunodeficiency Virus (Definition)

Human immunodeficiency virus (HIV) is a lentivirus (a member of the retrovirus family) that causes acquired immunodeficiency syndrome (aids), [1][2] a condition in humans in which progressive failure of the immune system allows life-threatening opportunistic infections ...Read more