A 26 year old male presents to a STD clinic with a single painless ulcer on external genitalia. The choice of laboratory test to look for the etiological agent would be ?
|A.||Scrapping from ulcer for culture on chocolate agar|
|B.||Scrapping from ulcer for dark field microscopy|
Serology for detection of specific IgM antibodies
Scrapping from ulcer for Tissue culture
Correct answer : b
The condition described in question is primary syphilis
Incubation period : 9-90 days
Presents with a single hard indurated ( button like) painless ulcer with regular edges which oozes serum on pressure.
Chancre redux is a clinical feature of Early Relapsing Syphilis.
IOC : Scrapping from ulcer for Dark field microscopy