HealthCareMagic is now Ask A Doctor - 24x7 | https://www.askadoctor24x7.com

Get your health question answered instantly from our pool of 18000+ doctors from over 80 specialties
159 Doctors Online

By proceeding, I accept the Terms and Conditions

Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

HCM Blog Instant Access to Doctors
HCM BlogQuestions Answered
HCM Blog Satisfaction

TPHA Positive. Urine And Blood Tests Show Negative Results. How Is That Possible?

Hello.
I have a brother and he was applying as a Welder in abroad but he was failed due to he was positive in Tpha. He was really shocked because he had no Idea where'd he got that disease since He only had sex with his wife and his wife was a virgin. Just yesterday he went to the doctor and have chiecked his blood and urine but it was negative. I just wanna ask if how'd they come up with that result? Is it possible to be positive in TPHA knowing that you really are clean? Thank you
Sat, 20 Jul 2013
Report Abuse
General & Family Physician,  's  Response
Hello,

Thanks for your Query. The First and foremost thing in establishing the Diagnosis of Syphilis is Clinical signs and symptoms. Because there are False positive reactions are possible for TPHA test. Most common false positive antigens are non- pathogenic treponema antigens and other spirochetes.Sometimes leprosy antigen may show false positve reaction. So there is a possibility for TPHA positive without urine and blood negative results. If you need further confirmation, You can do some other tests like TPI and FTA-ABS

Thank you
I find this answer helpful

 1 user finds this helpful
Note: Consult a Sexual Diseases Specialist online for further follow up- Click here.
Disclaimer: These answers are for your information only and not intended to replace your relationship with your treating physician.
This is a short, free answer. For a more detailed, immediate answer, try our premium service [Sample answer]
Share on
 

Recent questions on Treponema pallidum particle agglutination assay


Loading Online Doctors....
TPHA Positive. Urine And Blood Tests Show Negative Results. How Is That Possible?

Hello, Thanks for your Query. The First and foremost thing in establishing the Diagnosis of Syphilis is Clinical signs and symptoms. Because there are False positive reactions are possible for TPHA test. Most common false positive antigens are non- pathogenic treponema antigens and other spirochetes.Sometimes leprosy antigen may show false positve reaction. So there is a possibility for TPHA positive without urine and blood negative results. If you need further confirmation, You can do some other tests like TPI and FTA-ABS Thank you