3 doctors weighed in:
Why are there sometimes false readings of htlv i&ii in blood donations?
3 doctors weighed in

Dr. Ed Friedlander
Pathology
1 doctor agrees
In brief: 2 types of test
We screen by looking for antibodies; this picks up all the infected individuals but also folks whose antibodies may be due to some past infection.
The more specific confirmatory tests are much more expensive but only if they are positive should the blood / person be considered infected.

In brief: 2 types of test
We screen by looking for antibodies; this picks up all the infected individuals but also folks whose antibodies may be due to some past infection.
The more specific confirmatory tests are much more expensive but only if they are positive should the blood / person be considered infected.
Dr. Ed Friedlander
Dr. Ed Friedlander
Thank
Dr. Gurmukh Singh
Pathology
In brief: Sensitivity and
Specificity. Screening tests are designed to have high sensitivity so that no cases are missed, in the bargain, it produces false positives.
A positive screening test should be confirmed with a more specific test.

In brief: Sensitivity and
Specificity. Screening tests are designed to have high sensitivity so that no cases are missed, in the bargain, it produces false positives.
A positive screening test should be confirmed with a more specific test.
Dr. Gurmukh Singh
Dr. Gurmukh Singh
Thank
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