1) what's the longest it can take for a syphilis test to turn positive after the appearance of chancre? 2) is syphilis transmissable before a chancre appears? 3) can taking cbd affect test results? 4) can a test turn +ve before chancre a appears?

Tests usually positive within 2-3 weeks after chancre onset. Usually not transmissible pre-chancre, but it can happen, and ALL sex partners of people with syphilis should be examined and treated, even if exposed only a day or two after catching the infection. CBD has no effect on test results. Sometimes no chancre ever develops and the blood test becomes positive within 8 wk of exposure.

Depends on the test. nearly all tests are positive after about 6-8 weeks. yes it is transmissible before appearance of chancer. CBD will not affect results. A chancer appears between 1-13 weeks after exposure and in some cases after test posivity.