Test

Reporting

Positive Acid Phosphatase (AP)* or other preliminary color test

• Analysis of (Exhibit__) gave presumptive chemical indications for the presence of acid phosphatase, a component of semen.

Positive AP
AND
Positive Microscopic (sperm)

• Spermatozoa were identified on _____.
• Microscopic examination of __ demonstrated the presence of spermatozoa.

Positive AP
AND
Negative Microscopic (sperm)
AND
Positive P30

• Semen was identified on _____. Further characterization may be possible using y-chromosome specific marker DNA analysis. Please contact the Forensic Biology section for a list of laboratories that conduct this analysis.
• Microscopic examination of __ failed to demonstrate the presence of spermatozoa. Analysis of __ demonstrated the presence of semen.

Positive AP
AND
Negative Microscopic (sperm)
AND
Negative P30

• No semen was identified on _____. 

Negative AP

• No semen was detected on _____.
• Analysis of__ failed to demonstrate the presence of semen.

Negative Visual/Alternate Light Source (ALS)

• No stains consistent with semen were observed on ___.

Postive (nucleated) Microscopic (cellular material)

• Nucleated cellular material was detected on _______.

Positive (no confirmation of nucleus) Microscopic (cellular material)

• Cellular material was detected on_________ .

Negative Microscopic (cellular material)

• No cellular material was detected on _____.

Unevaluated Microscopic (cellular material)

• Swabs were collected from _______ and were preserved and retained in laboratory frozen storage.

*There are numerous preliminary color tests that can be used in forensic testing methods. The most common are noted; however, other preliminary color tests could be reported similarly.