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Test Code MISCLM Chlamydia trachomatis, Miscellaneous Sites, by Nucleic Acid Amplification

Important Note

Test MCRNA is sent out to Mayo only for sources other than genital and urine.  For testing for female urine/swab specimens and for male urine specimens, please see test CTNGPC.

Additional Codes



Reporting Name

C. trach, Misc, Amplified RNA

Useful For

Detection of Chlamydia trachomatis in non-FDA-approved specimen types

Method Name

Transcription Mediated Amplification

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type


Advisory Information

This test is used for specimens that are not FDA approved for this assay. Acceptable non-FDA-approved specimen types are ocular, oral, anal or rectal swabs, and peritoneal fluid. For FDA-approved specimen types, order CTRNA / Chlamydia trachomatis by Nucleic Acid Amplification (GEN-PROBE).

Necessary Information

Specimen source is required.

Specimen Required

Swab specimens must be collected using an Aptima Collection Unisex Swab (T583), or Aptima Collection Multitest Swab (T584). These swabs are contained in the Aptima Collection Kit.


Submit only 1 of the following specimens:



Swab, Aptima Male/Female Collection (T583)

Swab, Aptima Multitest Swab Specimen Collection Kit (T584, formerly called Aptima Vaginal Swab Specimen Collection Kit)

Specimen Type: Oral/throat or ocular (corneal/conjunctiva) or rectal/anal

Container/Tube: Aptima Collection Multitest Swab (T584) or Aptima Swab Collection System (T583)

Specimen Volume: Swab

Collection Instructions:

1. Swab site using Aptima Collection Multitest Swab (T584) or Aptima Collection Unisex Swab (T583).

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, and label tube with patient's entire name, and date and time of collection.

4. Transport swab container to laboratory and store (refrigerated is preferred) within 60 days of collection.


Supplies: Aptima Thin Prep Transport Tube (T652)

Specimen Type: Peritoneal fluid (pelvic wash, cul-de-sac fluid)

Container/Tube: Aptima Specimen Transfer Tube (T652)

Specimen Volume: 1 mL

Collection Instructions:

1. Transfer specimen into the Aptima Specimen Transfer Tube (T652) within 24 hours of collection.

2. Cap tube securely, and label tube with patient's entire name, and date and time of collection.

3. Transport Aptima Specimen Transfer Tube to laboratory (refrigerated is preferred) within 30 days of collection.

Specimen Minimum Volume

Oral/Throat, Ocular, Anal/Rectal Swabs: Entire collection
Peritoneal Fluid: 1 mL

Specimen Stability Information

Specimen Type Temperature Time
Varies Refrigerated (preferred)

Reject Due To








Sources other than those listed above

Reference Values


Day(s) and Time(s) Performed

Monday through Saturday; Varies

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
MCRNA C. trach, Misc, Amplified RNA 43304-5


Result ID Test Result Name Result LOINC Value
SRC11 SOURCE: 31208-2
34507 C. trach, Misc, Amplified RNA 43304-5

Analytic Time

1 day

Test Classification

This test has been modified from the manufacturer's instructions. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.