Medical Specialty >> Infections

Doctors Lounge - Infections Answers

Back to Infections Answers List

If you think you may have a medical emergency, call your doctor or 911 immediately. Doctors Lounge ( does not recommend or endorse any specific tests, physicians, products, procedures, opinions, or other information that may be mentioned on the Site.

DISCLAIMER: The information provided on is designed to support, not replace, the relationship that exists between a patient/site visitor and his/her physician. Please read our 'Terms and Conditions of Use' carefully before using this site.

Date of last update: 10/12/2017.

Forum Name: Sexually Transmitted Diseases

Question: How can syphilis and Gonorrhea be diagnosed?

 Emily1891 - Tue Nov 17, 2009 9:31 am

Hello doctor, I'd like to know what tests can detect Syphilis and Gonorrhea. Can 3 negative blood cultures rule out syphilis and gonorrhea? Thank you.
 Dr.M.jagesh kamath - Fri Dec 11, 2009 10:43 am

User avatar Hello,If you have got tested for VDRL for syphilis,a nontreponemal test and repeated it after4 to 6weeks and negative have not had other exposures to STD you can be faily be certain of being negative.Treponemal EIA tests are used nowadays with TPHA test for confirmation.Some times a false negative test can happen due to excess antigen and may need a VDRL/RPR TPHA tests for confirmation.Since you have not mentioned the tests done I am not in a position to give you a better reply related to your query.Gonorrhea is diagnosed with a grams stain of the secretions,and a culture test which is near 100% accurate.ELISA tests are also effective tools in diagnosis.Best wishes.

| Check a doctor's response to similar questions

Are you a Doctor, Pharmacist, PA or a Nurse?

Join the Doctors Lounge online medical community

  • Editorial activities: Publish, peer review, edit online articles.

  • Ask a Doctor Teams: Respond to patient questions and discuss challenging presentations with other members.

Doctors Lounge Membership Application

Tools & Services: Follow DoctorsLounge on Twitter Follow us on Twitter | RSS News | Newsletter | Contact us