24th September 2020

A 35-year-old sexually active male presents to his GP with a several-day history of unilateral scrotal pain

A 35-year-old sexually active male presents to his GP with a several-day history of unilateral scrotal pain and swelling. He has also noticed that he has developed urethral discharge. A first-void urine sample and urethral swab are sent for gram staining, culture and microscopy. What further test should be performed on these samples to determine the bacterial cause of his problem?  

Select the SINGLE most appropriate option from the list below. Select ONE option only.