Dr. what does meaning the VDRL stands for 1.1 is it negative result or is it a positive result?
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More than 1 is positive.
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VDRL is non specific test for Syphilis. 1: 1 is negative.
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1:1 is no dilution. 1:2 is diluted 50%. Next is 1:4 diluted again by half. etc. So 1:2 is a lower titer than 1:16 or 1:256 (which would be lots of antibody requiring lots of diluting to before you can no longer detect it). After someone is treated for syphilis we like to see the titers drop after a few weeks. In order for it to be adequate the levels must change by at least 2 dilutions....so 1:16 would have to drop at least below 1:4 to show a good response to treatment. A titer that bounces from 1:2 to 1:4 would not cause concern, but if it went up by 2 steps (1:2 to 1:4 to 1:8) that would be worrisome.
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