<prompt> Freis intradermal test is done for:ChlamydiaeLGVHerpes simplexDonovanosis  <response>: Ans: b LGV Ref: Ananthanarayanan, 7th ed, p. 428Freis test was an intradermal test commonly used for LGVThe crude chlamydial antigen from bubo pusis inoculated intradermally in the forearm. An induration 7mm or more in 2-5 days is taken as positive test. Due to the frequentoccurance or false positive reactions, it is not used now.Other common tests frequently askedMantoux test ID-TBCasonistest ID-EcchinococcusIto test-ChancroidNapiers aldehyde test- Leishmanin test-LeishmaniasisKviem test-SarcoidosisAnton test-ListeriaDick test-Scarlet feverSereny test-Shigella.EIECFairleys test-Schistosoma haematobiumSabin Feldman; Frenkels test-ToxoplasmaHangar rose test-Cat scratch diseaseEijkman test-E.coliWhey agglutination test-BrucellosisEiken precipitin test-ETEC 