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Lab Test Dictionary

Miscellaneous Chlamydia trachomatis and Neisseria gonorrhoeae by Nucleic Acid Amplification (MCTGC)


Transcription Mediated Amplification


Chlamydia trachomatis RNA amplification; Neisseria gonorrhoeae RNA amplification; Gonorrhoeae; Gonorrhea

Specimen Type


Performing Lab

Mayo Medical Lab

Epic ID


Lab Test Days

Monday-Saturday; Varies

Standard TAT

1-3 Days

Collection Information

Specimen Required

Oral or Ocular (corneal/conjunctiva) swab

Container Type

APTIMA Unisex Swab Specimen Collection Kit

Collection Instructions

1. Swab site using APTIMA Collection Unisex Swab. Note: The white swab provided within the collection kit is a cleaning swab and should not be used for collection. Discard the white cleaning swab. 2. Place swab in transport tube provided in collection kit. Snap off swab at score line so swab fits into closed tube. 3. Cap tube securely.

Processing Information - Lab Use Only

Transport Temperature


Specimen Stability

Room Temp: Unacceptable; Refrigerated: 60 Days; Frozen: Unacceptable

Rejection Criteria

Sources other than those listed

Processing Instructions

Order in Mayolink and send with Mayo courier Monday-Friday.

CPT Codes

87491, 87591