Treponema pallidum immobilization test
noun
Treponema pal·li·dum immobilization test
-ˈpal-əd-əm- 
: a serological test for syphilis in which a solution containing the living causative spirochete (Treponema pallidum) is combined with serum in the presence of complement with immobilization of the active spirochetes indicating a positive result
—abbreviation TPI
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“Treponema pallidum immobilization test.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Treponema%20pallidum%20immobilization%20test. Accessed 3 May. 2024.
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