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Related Experiment Videos

Follow-up on the Berg acid phosphatase test

A F Schiff

    The American Journal of Forensic Medicine and Pathology
    |April 16, 1998
    PubMed
    Summary

    The acid phosphatase (AP) test can still detect 25-year-old seminal fluid, and the reagents used remain stable and usable for forensic analysis.

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    Area of Science:

    • Forensic Science
    • Biochemistry
    • Enzymology

    Background:

    • The Berg acid phosphatase (AP) test has been a standard for detecting sexual intercourse for over 40 years.
    • AP is an enzyme abundant in seminal fluid, making it a key indicator in forensic investigations.
    • Previous research simplified the AP test and reviewed its historical context.

    Purpose of the Study:

    • To determine the viability of 25-year-old seminal fluid for AP testing.
    • To assess the stability and usability of 25-year-old AP test reagents.
    • To validate the long-term effectiveness of the AP test in forensic science.

    Main Methods:

    • Utilizing 25-year-old seminal fluid samples for AP testing.
    • Employing aged refrigerated reagents for the acid phosphatase test.
    • Comparing results from aged samples and reagents with historical data.

    Main Results:

    • The acid phosphatase test successfully identified the presence of seminal fluid in 25-year-old samples.
    • The 25-year-old reagents demonstrated continued stability and usability for AP detection.
    • The findings confirm the long-term reliability of the AP test for forensic evidence.

    Conclusions:

    • The acid phosphatase test remains a valid and reliable method for identifying seminal fluid, even with aged samples.
    • Long-term storage of seminal fluid and associated reagents does not significantly compromise the efficacy of the AP test.
    • This study supports the continued use of the AP test in forensic casework involving potentially aged biological evidence.

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