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. Author manuscript; available in PMC: 2015 Aug 24.

Published in final edited form as: Contraception. 2012 Mar 2;86(1):55–61. doi: 10.1016/j.contraception.2011.10.018

Table 1. Interpretation criteria for three PSA tests (EIA, RIE and CIA).

Pre-coital test	Evaluable	Inevaluable
EIA^a	<5 ng/mL	≥ 5 ng/mL
RIE^a	0	>0
CIA^a	No line, faint line	Clear line
Post-coital test	No exposure	Exposure
EIA	<22 ng/mL above pre-coital	≥ 22 ng/mL above pre-coital
RIE	0	>0
CIA	No line, faint line	Clear line

^a

EIA, Quantitative enzyme-linked immunoassay; RIE, rocket immuno-electrophoresis; CIA, chromatographic immunoassay.