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Doctor insights on: What St Ds Can They Test For By Blood

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Dr. Heidi Fowler
1,582 doctors shared insights

Sexually Transmitted Diseases (Definition)

A sexually transmitted disease is an infection which is ...Read more


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How long after exposure can you see in blood test for stds?

How long after exposure can you see in blood test for stds?

STD : It depends on the std. Syphilis would be revealing about a month after exposure. Hiv can be detected as early as 10-14 days by measuring the HIV virus directly. Hepatitis b/c may take up to 6 months to be detected but as early as 60 days. Gonorrhea/chlamydia are not detected in the blood. Herpes is often detected incidentally given the fact primary exposure often remains unknown. ...Read more

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What happens if I'm getting a blood test for STDs can they tell if I smoke cigarettes?

What happens if I'm getting a blood test for STDs can they tell if I smoke cigarettes?

Maybe,maybe not: They will not find it in the test.However, most smokers will have a lingering tobacco smell that is an easy pickup in close quarters. ...Read more

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Is the HPV test a separate test from the test for other STDs? Will drawing blood be required if I only want to find out if I have HPV?

Is the HPV test a separate test from the test for other STDs? Will drawing blood be required if I only want to find out if I have HPV?

Yes: Each of the dozen or more diseases that can pass sexually are found through separate testing.Some of the more common ones are bunched and ordered at the same time.Some can be done on a concentrated urine test or vaginal swab.Others require blood tests.HPV can sometimes be diagnosed by exam (wart strain) but serum tests for antibodies to various strains are also available. ...Read more

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Had general testing for stds. They didn't test for hsv2 even when i asked for the blood test, said they only test if theres sores. How come?

Had general testing for stds. They didn't test for hsv2 even when i asked for the blood test, said they only test if theres sores. How come?

See a dermatologist: You certainly can get this blood test. Many are infected without knowing it. Transmission of the virus to others may occur in the absence of blisters. Most infections of hsv2 occur from contact in absence of any symptoms. Cultures reveal presence of herpes virus between attacks, even from infected people who have never had a typical lesion. Atypical symptoms are the norm. ...Read more

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How accurate or reliable are on campus health clinics when it comes to blood test for stds?

How accurate or reliable are on campus health clinics when it comes to blood test for stds?

Reliable: Most health campuses have qualified practitioners on site to evaluate students. If they obtained specimen and sent it off, odds are they sent it to one of the few national labs to run the tests. This would be accurate. If unsure then, seek a second opinion. ...Read more

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I'm curious to know what are the chances of receiving a false positive on a blood test for herpes or any std?

I'm curious to know what are the chances of receiving a false positive on a blood test for herpes or any std?

Let me explain: No diagnostic test is perfect, but the test of std diseases are very good, rarely you get either false poivtive or flase negative. It depends not only on the test but on the population it is used in. ...Read more

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If I went to the hospital because I was very ill without knowing the cause and they did blood work would they usually test for an std?

If I went to the hospital because I was very ill without knowing the cause and they did blood work would they usually test for an std?

Not necessarily: This depends on the clinical picture of "very ill" The most pertinent information regarding std's is carried out with a pelvic exam. Don't forget that your medical record is YOUR record. You can get a copy of this from the hospital with a request. If you have symptoms persisting, then I would followup as an outpatient with a visit to address them. ...Read more

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Can a blood test be as reliable as a pap smear test for stds?

Can a blood test be as reliable as a pap smear test for stds?

Different Tests: A pap smear looks only for hpv - a virus that causes cervical cancer. Other cervical swabs test for gonorrhea, chlamydia, trichomoniasis and bacterial vaginosis. There is no blood test for those conditions. Other stds do require a blood test such as hepatitis and hiv. ...Read more

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I've been tested (blood test) for STD and i had negative result for herpes. Does that mean i don't have either hsv1 or 2?

I've been tested (blood test) for STD and i had negative result for herpes. Does that mean i don't have either hsv1 or 2?

Probably, yes: The HSV blood tests are highly accurate, but they take up to 3-4 months to become positive. So your negative result means you aren't infected, except for a slight chance if you were exposed recently. But if you haven't been at risk for STD and no obvious contact with someone with oral herpes, you can be very sure you don't have either virus. ...Read more

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I was tested via blood test for STDs and was told I tested positive for herpes exposure and that I have the antibodies in my blood but that I don t have herpes I am so confused do I have herpes ?

I was tested via blood test for STDs and was told I tested positive for herpes exposure and that I have the antibodies in my blood but that I don t have herpes I am so confused do I have herpes ?

Correlate: A pathologist's perspective: herpes simplex 1 generally affects the lips and mouth and most people are positive, simplex 2 the genitals, there's variability. The antibody tests are famously unreliable and often mistake one for the other. If you are not symptomatic, consider ignoring these results unless your physician tells you otherwise. ...Read more

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Does a blood test for every disease other then just hiv and hep? Will it test for stds and so on? Or does a pap smear only show stds?

Does a blood test for every disease other then just hiv and hep? Will it test for stds and so on? Or does a pap smear only show stds?

No: Lab tests are designed to test for 1 or 2 things each. Some are "test panels", and each item on the panel tests for 1 or 2 things. A doctor and his patient must first decide what things need to be tested for (they should have a good reason for doing each test). Then, those specific tests can be done, and the patient or her insurance company can pay for the tests (some are very expensive). ...Read more

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Went to Gyno for a pap smear, ultrasound & STD tests. Everything came back negative. He said Im fine & blood is clear but he didnt test for syphilis?

Went to Gyno for a pap smear, ultrasound & STD tests. Everything came back negative. He said Im fine & blood is clear but he didnt test for syphilis?

Probably OK: STD testing often includes syphilis. But in some situations it doesn't matter. Except in special circumstances, syphilis is very rare in most heterosexuals in the US and other industrialized countries, especially at your age of 18. So most likely you aren't at risk. But if you think you're at risk or would like reassurance, it shouldn't be a big deal to be tested. Ask your doctor about it. ...Read more

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Gynocologist wouldnt blood test for herpes1&2 w/out outbreak cause the cell structure is similar but STD clinics do it all the time, r the tests accura?

New Doctor Needed: I am sorry to inform you but you need a new physician. That is one of the most outrageous stories I have heard about the very necessary testing for herpes that all sexually active adults need. Herpes blood tests are the standard. They are very accurate. 90% of people infected with herpes do not have outbreaks. Your physician sounds like a quack. ...Read more

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All test for std's are neg, cystoscopy & X-ray neg! sitting for long time irritates prostate or perineum & blood in urine/ semen occ. What do I do?

All test for std's are neg, cystoscopy & X-ray  neg! sitting for long time irritates prostate or perineum & blood in urine/ semen occ. What do I do?

12 STDs: There are twelve stds. Some are bacterial, some are viral, etc. Prostatitis is, in general, not caused by stds. And many chronic prostatitis situations are not caused by infection. You may want to seek out online the natural approaches to managing chronic prostatitis. Or you may want to consult a urologist since the symptoms are persisting. I just want to point out that there are a lot more stds. ...Read more

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To test for STDs what type of test I have to do?

To test for STDs what type of test I have to do?

Twelve STDs: There are twelve different stds. Some are tested with blood. Some with culturing of fluids or tissues. And some by examination. ...Read more

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What STDs are generally tested through a blood test ?

What STDs are generally tested through a blood test ?

HIV, HSV, syphilis: You don't have a diagnostic rash with HIV and a blood test is necessary for diagnosis. Herpes, or HSV you will have classic rash in the genital area with primary infection, and a blood test can confirm that. Also the RPR test is used for diagnosis of syphilis if not having classic chancres ...Read more

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Is 4 weeks a good time to test for all stds after exposure?

Is 4 weeks a good time to test for all stds after exposure?

6 weeks is better: Gonorrhea and chlamydia tests are valid any time more than 3-3 days after the last exposure, and negative results at 4 weeks will show you weren't infected. Same for certain vaginal infections, e.g. trichomonas. However, most other STDs require blood tests for diagnosis (e.g., syphilis, HIV, hepatitis B). Four weeks is pretty good, but they can take 6 weeks. Consider waiting another two weeks. ...Read more