Top
20
Doctor insights on: Ept Testing Results

Share
1

1
Acth stimulation test results accurate?

Acth stimulation test results accurate?

Depends: I'm assuming no lab errors. If you get a very high cortisol spike after receiving the first dose of ACTH, you are reassured you do not have Addison's. No, or a very small spike, strongly suggests Addison's. In-between... that's why there are specialist endocrinologists. ...Read more

2

2
What causes false positive HCV antibody test results?

What causes false positive HCV antibody test results?

Misinformed?: Who told you that your hep c test was false? If you have no viral load that means you cleared an infection. Are you sure you are getting the right advice? ...Read more

4

4
Positive HIV screener test at blood donation... Negative IFA and Negative NAT... False positive?

Positive HIV screener test at blood donation... Negative IFA and Negative NAT... False positive?

Yes: The initial screening test for HIV is very sensitive, but not very specific. The back up screening tests are much more specific for HIV. ...Read more

5

5
Is 3 months HIV test provide accurate results?

Is 3 months HIV test provide accurate results?

Yes: A tes 3 months after exposure is accurate but if there is ongoing unprotected sexual contact then repeat testing Meyer be needed. Best to use protection and limit number of partners. ...Read more

9

9
What causes false negative results in a methacholine test?

What causes false negative results in a methacholine test?

True or False Test?: A "false negative" test means the presence of a "confounding variable" that invalidates the test because it nullifies a test that would probably be positive if the variable were absent, like a brochodilator medicine (e.g.various inhalers and pills for asthma). So the test should be done in the absence of those medications, if possible-or-used as a validation as to the medication's effectiveness. ...Read more

See 1 more doctor answer
10

10
Is a four week negative HIV antibody test / negative PCR test reliable?

HIV diagnosis: Antibody titers have been reported to be delayed as long as six months, but this is very unusual. A negative pcr for viral RNA is virtually determinative of the absence of infection. ...Read more

14

14
Is 3dot rapid HIV test gives accurate results?

Is 3dot rapid HIV test gives accurate results?

Depends: There are better tests available now. The so called 3 dot tests depends on the presence of antibodies and may not turn positive for up to a year after the infection. All positive results need to be confirmed. Test for HIV nucleic acid is more sensitive and specific however, even this test also may not turn positive for about 6 weeks after infection. ...Read more

15

15
Will an unrefrigerated urine sample cause an EtG test to test false positive?

Will an unrefrigerated urine sample cause an EtG test to test false positive?

No: ETG detects a metaboloite of alcohol. The modification occurs in the liver. If glucose is present in the urine that could get fermented into alcohol, but not into Etg as that requires an action by the liver. ...Read more

16

16
Suspected pregance but nective test results?

Suspected pregance but nective test results?

See below: Please consult this site to see if you have signs of pregnancy, if you do and have missed your period, do a home pregnancy test using first morning urine and follow the instructions carefully. You may wish to see your doctor for a blood test and may be ultrasound exam. http://www.webmd.com/baby/guide/pregnancy-am-i-pregnant. ...Read more

17

17
Erosive gastritis. h.pylori blood test positive, breath test positive, stool antigen test negative, biopsy negative. what to do ?

Erosive gastritis. h.pylori blood test positive, breath test positive, stool antigen test negative, biopsy negative.  what to do ?

Treat it: The positive H. pylori antibody test is not a reliable indicator of current infection. The gold standard for H. pylori treatment is the gastric biopsy, and this is negative in this patient. However, I am impressed by the positive breath test and erosive gastritis. I would have expected stool antigen to be positive, as it mirrors the breath test. Given the discrepant results, treat the patient. ...Read more

18

18
Can negative test results be trusted for a prostitute with HIV antibody rapid test and HIV duo test?

Can negative test results be trusted for a prostitute with HIV antibody rapid test and HIV duo test?

Not necessarily: If the person just acquired the infection, she or he may be carrying the virus that will not be detected by either antibody or antigen tests. Testing for viral nucleic acid is the earliest way to detect HIV infection. ...Read more

19

19
Hcg 50 positive blood test two negative urine please help.

Hcg 50 positive blood test two negative urine please help.

Recheck blood: You need to have the blood levels checked again. You expect the level to about double in 2 days with a normal pregnancy. ...Read more

20

20
Would a NAAT swab test show positive for chlamydia 3 days post possible exposure?

Would a NAAT swab test show positive for chlamydia 3 days post possible exposure?

A bit too early: The exact time for reliable chlamydia testing by NAAT isn't certain, but 3 days probably is a bit early. A negative result would be somewhat reassuring, but probably not conclusive. It would be safer to wait until 5 days or so, unless there is some urgency (e.g. if you have abdominal pain or other symptoms of a complication like PID). ...Read more