<prompt> Gold standard investigation in diagnosing PID is:March 2005Anti chlamydial AbLaparoscopyUSGBlood leucocyte count  <response>: Ans. B: LaparoscopyInvestigations in a case of PID:Physical examinationPregnancy test to rule out anectopic pregnancyWhite blood cell test to rule out appendicitisGenital culture to look for gonorrhea and chlamydia.An endometrial biopsy tissue sample removed from the endometriumSonogram if abscesses are suspectedCuldocentesis fluid sample taken from uterine sacLaparoscopy are done.Laparoscopy is considered the gold standard for diagnosis of PID, because it allows visualization of the pelvic organs. The procedure involves inseing a tiny, flexible lighted tube through a small incision just below the navel.This procedure is recommended when results of the preliminary tests physical exam, blood tests and cultures are unclear. 