Integrating presumptive and confirmatory semen tests into DNA profiling of sexual assault evidence: a Philippine example

Egyptian Journal of Forensic Sciences

Table 2 Specificity of three semen detection tests

Specimen tested	ALS	AP	Sg
Semen	+	+	+
Peripheral blood	−	−	−
Saliva	+ (weak)	−	−
Female urine	+	−	−
Post-ejaculatory male urine	+	+	+
Mixture 1	−	−	−
Mixture 2	−	+	+
Mixture 3	−	+	+
Mixture 4	−	+	+

Mixture 1: peripheral blood, saliva, and female urine (1:1:1)
Mixture 2: peripheral blood, saliva, and post-ejaculatory male urine (1:1:1)
Mixture 3: semen, peripheral blood, saliva, and female urine (1:1:1:1)
Mixture 4: semen, peripheral blood, saliva, and post-ejaculatory male urine (1:1:1:1)