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how long does it take for hiv to show up in a blood test

A 32-year-old female asked:
Dr. David Rosenthal
20 years experience Allergy and Immunology
Depends on the test: The older third generation HIV screening test did not show HIV for 2 to 8 weeks (average 25 days). The fourth generation tests which were just approv ... Read More
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A 34-year-old female asked:
Dr. M. Jan
Dr. M. Jan answered
65 years experience Family Medicine
No set period: All HIV positive do not develop aids. Hiv test usually become positive about 6 months after contact. Blood test can determine both aids and hiv.
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A 34-year-old female asked:
Dr. Amar Ashraf
Specializes in Infectious Disease
No: Blood test for HIV antibody (commonly known as HIV test) usually positive by 4 weeks of infection, few cases may take about 3 months . Special test li ... Read More
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A 29-year-old female asked:
Dr. Hunter Handsfield
52 years experience Infectious Disease
Different tests: There are several tests. "Seroconversion" usually means development of antibody that can be detected in blood tests. The standard, modern HIV antibody ... Read More
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A 30-year-old male asked:
Dr. Gurmukh Singh
48 years experience Pathology
Depends: You may wish to wait to 6 months after exposure to avoid false negative from testing too early. It would be better to get a HIV nucleic acid test at 6 ... Read More
A 44-year-old female asked:
Dr. Dominic Riganotti
24 years experience Infectious Disease
Varies: Results from antibody tests sent to a laboratory usually take one to three days to return. If the test is positive, results may be delayed while the l ... Read More
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A 42-year-old member asked:
Dr. M. Jan
Dr. M. Jan answered
65 years experience Family Medicine
2 days.: It s rapid test and results are available in couple if days.
A 41-year-old member asked:
Dr. Tony Ho
Dr. Tony Ho answered
13 years experience Infectious Disease
At least 4 weeks: Modern elisa tests are considered accurate at about 4 weeks, but testing protocols usually check at 3 months as well, just to be safe (with prophylax ... Read More
A female asked:
Dr. Ronald Krauser
51 years experience Rheumatology
No: If I understand your question HIV is not diagnosed by routine blood tests. You must have blood tests specifically designed to test for HIV.
A 52-year-old member asked:
Dr. Charles Sturgis
28 years experience Pathology
No.: If you mean a complete blood count (CBC) as a 'regular blood test', then HIV would not be diagnosed. In order to confirm a diagnosis of HIV infection ... Read More

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