Definitions for fta-abs
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FTA-Abs is a treponemal test for syphilis. Using antibodies specific for the Treponema pallidum species, such tests are more specific than non-treponemal testing such as VDRL. In addition, FTA-Abs turns positive earlier and remains positive longer than VDRL. Other treponemes, such as T. pertenue, may also produce a positive FTA-Abs. FTA - Abs should always be followed to confirm a positive RPR and/or VDRL test for syphilis. The ABS suffix refers particularly to a processing step used to remove nonspecific antispirochetal antibodies present in normal serum.
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