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A member asked:
Can phenazopyridine hcl 100mg * 10pcs consume at 21 days after exposure affect a reability test 3rd gen rapid hiv 94 days after exposure and negative tpha vdrl 117 days after exposure, am i need retest at 180days? or could that pills prevent syphlis?
3 doctors weighed in across 2 answers
Phenazopyridine has no effect on HIV or Treponema pallidum (bacteria cause syphilis) so it should not affect the tests which are used to detect the antibodies of HIV infection or syphilis. You do not need to have them retested if you are asymptomatic.
Answered 10/9/2022
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Penazopridine is prescribed for burning in urine and discolors the urine reddish and will interfere with any test which relies on the color of urine. So either the pill has to be stopped for 48hrs before or a blood test has to be done. It will not interfere with any blood test- so they should be reliable.
Answered 10/12/2022
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