What is the role of vaginal pH in the diagnosis of trichomoniasis?

Updated: Jan 02, 2020
  • Author: Darvin Scott Smith, MD, MSc, DTM&H; Chief Editor: Michael Stuart Bronze, MD  more...
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Vaginal pH may be determined by touching a swab containing vaginal secretions to pH indicator paper.

A normal pH practically excludes the diagnosis of symptomatic trichomoniasis. A pH greater than 4.5 is usually found with trichomoniasis. [61] However, an elevation in pH is not specific for trichomoniasis. [57]

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