Prostate specific Ag.free/Prostate specific Ag.total:MFr:Pt:Periton fld:Qn
prostate specific ag.free/prostate specific ag.total:mfr:pt:periton fld:qn
Free PSA/Total PSA (Periton fld) [Mass fraction]
free psa/total psa (periton fld) [mass fraction]