Chlamydia/Gonococcus, Rectal Swab, NAA

CPT: 87491; 87591
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Test Details

Synonyms

  • Chlamydia/Gonococcus, Amplicor® PCR
  • Chlamydia/Gonococcus, Aptima® TMA
  • Chlamydia/Gonococcus, ProbeTec™ SDA

Use

Detect Chlamydia trachomatis and Neisseria gonorrhoeae

Limitations

This test was developed, and its performance characteristics determined, by LabCorp. It has not been cleared or approved by the US Food and Drug Administration (FDA).

Methodology

Nucleic acid amplification (NAA)

Specimen Requirements

Specimen

Rectal specimen collected with Aptima® unisex collection swab and submitted in the Aptima® swab specimen transport tube

Volume

One swab (rectal)

Minimum Volume

One swab (rectal)

Container

Gen-Probe® Aptima® swab specimen transport tube

Collection

Insert the blue-shafted swab, labeled “unisex collection swab for endocervical and male urethral specimens,” 2" to 4" into the rectum and rotate to sample the mucosal surfaces. Do not use the white-shafted swab; discard this swab. Remove the cap from the swab specimen transport tube and immediately place the specimen collection swab into the transport tube. Carefully break the swab shaft at the scoreline; use care to avoid splashing of the contents. Recap the swab specimen transport tube tightly.

Storage Instructions

Maintain specimen at room temperature or refrigerate (2°C to 30°C).

Causes for Rejection

Inappropriate transport conditions; bacterial swabs; swabs from sites other than rectal; unlabeled specimens or those with a discrepancy between the specimen label and the test request form; Aptima swab transport tube with no swabs, two swabs or swab not supplied by GenProbe; Aptima swabs greater than 60 days from collection; any transport device other than an Aptima swab transport

Clinical Information

Special Instructions

Submit one specimen per test requested. Specify the exact specimen source/origin (eg, rectal). Indicate a specific test number on the test request form.

References

Kent CK, Chaw JK, Wong W, et al. Prevalence of rectal, urethral, and pharyngeal Chlamydia and gonorrhea detected in 2 clinical settings among men who have sex with men: San Francisco, Calif, 2003. Clin Infect Dis. 2005; 41(1):67-74. 15937765

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
188672 Ct/GC NAA, Rectal 188608 Chlamydia trachomatis, NAA 57287-5
188672 Ct/GC NAA, Rectal 188632 Neisseria gonorrhoeae, NAA 57458-2
Reflex Table for Chlamydia trachomatis, NAA
Order Code Order Name Result Code Result Name UofM Result LOINC
Reflex 1 188606 Disclaimer: 188606 Disclaimer: N/A
Reflex Table for Neisseria gonorrhoeae, NAA
Order Code Order Name Result Code Result Name UofM Result LOINC
Reflex 1 188630 Disclaimer: 188630 Disclaimer: N/A

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CPT Statement/Profile Statement

The LOINC® codes are copyright © 1994-2017, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at https://loinc.org/license/. Additional information regarding LOINC® codes can be found at LOINC.org, including the LOINC Manual, which can be downloaded at LOINC.org/downloads/files/LOINCManual.pdf