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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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HIV ELISA Test, Negative Test, OD 0.003, OD Ratio Cut Off Value: 0.4, HIV Positive ?

Dear Sir / Madam, My name is XXXXXXXXXX.I have undergone HIV ( ELISA ) test in one diagnostic centre. I got a report as below: Investigation Observed Value Unit Biological Reference Interval SEROLOGY HIV (ELISA METHOD) Negative Negative Test OD 0.003 OD Ratio Cut off value: 0.4 What does this report says? Please let me know. What is Test OD 0.003 & OD ration Cut off value:0.4. Is this suggest I am infected with HIV? Please please sir / madam help me.... I am very much worried please help me.
Thu, 17 May 2012
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HIV AIDS Specialist,  's  Response
Hai Srinivasa, You need not worry about all these values. You are negative for HIV at present as per the test. For every test they have designed in such a manner to say it is positive. That is the ct off value. The ELISA test you had been assessed have a cut off value as 0.4. Any thing above 0.4 is considered to be test positive. As far as your test value concerned, it is just 0.003, far lesser than the cut off value . This means you are not having HIV. Anyhow it all depends when you had your last risky sexual contact. If it is within 3 months duration, You have to repeat the test once again. If already it is more than 3 months time, then you just ignore and forget about the past and always adapt a safer sex with condoms. Have a nice day. Dr SM
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HIV ELISA Test, Negative Test, OD 0.003, OD Ratio Cut Off Value: 0.4, HIV Positive ?

Hai Srinivasa, You need not worry about all these values. You are negative for HIV at present as per the test. For every test they have designed in such a manner to say it is positive. That is the ct off value. The ELISA test you had been assessed have a cut off value as 0.4. Any thing above 0.4 is considered to be test positive. As far as your test value concerned, it is just 0.003, far lesser than the cut off value . This means you are not having HIV. Anyhow it all depends when you had your last risky sexual contact. If it is within 3 months duration, You have to repeat the test once again. If already it is more than 3 months time, then you just ignore and forget about the past and always adapt a safer sex with condoms. Have a nice day. Dr SM