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What is the different between vdrl and tpha test and which one will be negative after treatment?
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TPha is more senstive.
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YESSOMEWHATNO
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Both for syphilis, TPHA better to diagnose, But after proper treatment VDRL may have decreased titre but may take years to completely turn negative. TPHA may not show those changes after proper treatment
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YESSOMEWHATNO
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