Progesterone Free & Total – Ref LabSee reference lab website for details.https://www.labcorp.com/tests/503658/progesterone-free-with-total-progesterone-lc-ms-ms-endocrine-sciencesOverviewSpecimenPerformanceCodesAliases503658,PN0012584Specimen TypeSee reference lab website for details.https://www.labcorp.com/tests/503658/progesterone-free-with-total-progesterone-lc-ms-ms-endocrine-sciences