Rogers C, Bernstein G, Nakamura R, Endahl G, Bhoopat T
Department of Pathology, Los Angeles County-University of Southern California Medical Center.
J Forensic Sci. 1988 Jan;33(1):77-83.
Zinc is present in high concentration in semen, but in low concentration in vaginal fluid. We evaluated vaginal zinc levels as a marker for intercourse by measuring precoital (greater than 11 h after intercourse) or postcoital (less than 5 h after intercourse) zinc and acid phosphatase levels in 26 specimens of vaginal fluid from 18 women. The approximate 95% reference range for zinc in precoital vaginal fluid was 1.2 to 15 micrograms/mL (mean 4.5), and in postcoital vaginal fluid 4.0 to 135 micrograms/mL (mean 24). There is an overlap between the precoital and postcoital reference ranges. Provided that the vaginal fluid zinc level is less than approximately 4.0 micrograms/mL or greater than approximately 15 micrograms/mL, vaginal fluid zinc concentration may be useful as an indicator of intercourse.
锌在精液中浓度很高，但在阴道液中浓度很低。我们通过测量18名女性的26份阴道液样本中性交前（性交后超过11小时）或性交后（性交后少于5小时）的锌和酸性磷酸酶水平，来评估阴道锌水平作为性交标志的情况。性交前阴道液中锌的大约95%参考范围是1.2至15微克/毫升（平均4.5），性交后阴道液中锌的参考范围是4.0至135微克/毫升（平均24）。性交前和性交后的参考范围有重叠。如果阴道液锌水平低于约4.0微克/毫升或高于约15微克/毫升，阴道液锌浓度可能可用作性交的指标。
