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Lab Test Dictionary

Chlamydia trachomatis Antigen, DFA (4966)


Direct Immunofluorescence Assay (DFA)

Specimen Type

See Collection Instructions

Performing Lab

Quest Diagnostics San Juan Capistrano

Epic ID


Lab Test Days


Standard TAT

1-2 Days

Collection Information

Specimen Required

1 Swab or 1 Slide urethral, cervical, rectal mucosal, eye or nasopharyngeal on a clean glass microscope slide fixed with methanol or in VCM or equivalent medium

Container Type

See Below

Processing Information - Lab Use Only

Transport Temperature


Specimen Stability

Room Temp: 7 Days (Unacceptable for VCM medium or equivalent UTM); Refrigerated: 7 Days ( 48 Hours for VCM medium or equivalent UTM); Frozen: Unacceptable (30 Days for VCM medium or equivalent UTM)

Rejection Criteria

Unfixed slides; Raw (not in transport) samples; Urine; Wooden shaft or calcium alginate swabs; Dry swabs; Swabs in bacterial gel-based transport media; Swabs in nucleic acid transport media; Tissues in fixatives; Broken slides

Minimum Test Volume

1 Swab or 1 Slide

CPT Codes