Clinical and Translational Medicine

Table 2 Measuring glycerin as a marker for the presence of vaginal film

From: Development and clinical assessment of new objective adherence markers for four microbicide delivery systems used in HIV prevention studies

Swab extract	Glycerin (mM)
Vaginal swab only	0.00
Vaginal swab + 1:5 film^a	1.54
Vaginal swab + 1:25 film^a	0.36
Vaginal swab + 1:100 film^a	0.07
Vaginal swab + 1:5 semen^a	0.00
Vaginal swab + 1:10 semen^a	0.00

^aSwabs were briefly dipped into various dilutions of film and semen

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