Resources Project Documentation MACS Documentation Multicenter AIDS Cohort Study (MACS) This documentation is specific to MACS and does not apply to other projects. If you are looking for information about using LDMS, view our documentation Assay Instructions COBAS Ampliprep/COBAS TaqMan HIV-1 Qualitative Test Abbott Realtime HIV-1 COBAS TaqMan HCV COBAS TaqMan HIV-1 Running DNA Assays in LDMS Using LDMS LDMS Transaction Log Reference Guide