Chlamydia trachomatis RNA, TMA, Urogenital

Test code

11361

CPT code(s)*

87491

**CPT Code is subject to a Medicare Limited Coverage Policy and may require a signed ABN when ordering.

In-home collection may be available in your area for purchase through Quest Mobile.

IMPORTANT: Please review the Specimen Collection instructions SPECIMEN COLLECTION GUIDES FOR APTIMA for this test

Clinical significance

Chlamydia trachomatis RNA, TMA, Urogenital - C. trachomatis infections are the leading cause of sexually transmitted diseases in the united states. C. trachomatis is known to cause cervicitis, pelvic inflammatory disease (PID), epididymitis and proctitis. It is also the most frequent cause of non-gonococcal urethritis in men. Among women, the consequences of chlamydial infections are severe if left untreated. Approximately half of chlamydial infections are asymptomatic.

Test resources

Details

Test details

Methodology

Transcription-Mediated Amplification (TMA)

Alternative name(s)

CT TMA,CT Aptima,Hologic

Specimen requirements
Patient preparation	Urine: Patient should not have urinated within one hour prior to collection. Female patients should not cleanse the labial area prior to providing the specimen.
Preferred specimen(s)	1 vaginal swab in Aptima® Transport Tube 1 endocervical or urethral swab in Aptima® Transport Tube 2 mL urine in Aptima® Transport Tube 1 mL liquid cytology ThinPrep® PreservCyt® in Aptima® Transfer Tube 0.5 mL SurePath™ preservative fluid in Aptima® Transfer Tube
Minimum volume	1 vaginal swab in Aptima® Transport Tube 1 endocervical or urethral swab in Aptima® Transport Tube 2 mL urine in Aptima® Transport Tube 1 mL ThinPrep® PreservCyt® in Aptima® Transfer Tube 0.5 mL SurePath™ fluid in Aptima® Transfer Tube
Collection instructions	Vaginal Swab: Follow instructions in the Aptima® Multitest Collection Kit (orange label). Endocervical or Urethral Swab: Follow instructions in the Aptima® Unisex Swab Specimen Collection Kit (white label). In females, to ensure collection of cells infected with C. trachomatis, columnar epithelial cells lining the endocervix should be obtained. Excess mucus should be removed prior to sampling. Urine: Direct patient to provide a first-catch urine (a maximum of 20-30 mL of the initial urine stream) into a urine collection cup free of any preservatives. 2 mL of urine specimen must be transferred into the Aptima® Specimen Transport Tube within 24 hours of collection and before being assayed. Use the tube provided in the urine specimen collection kit. The fluid (urine plus transport media) level in the urine transport tube must fall within the clear pane of the tube label. Labs performing cytology: Aliquot ThinPrep® PreservCyt® solution before performance of liquid-based cytology testing. ThinPrep® PreservCyt®: Transfer 1 mL ThinPrep® PreservCyt® solution into Aptima® Specimen Transfer Tube (green label) or Aptima® Multitest Collection Tube (orange label) or Unisex Swab Specimen Collection Tube (white label). SurePath™: SurePath™ fluid must be transferred to Aptima® tube within 4 days of collection. Transfer 0.5 mL SurePath™ solution into Aptima® Specimen Transfer Tube (green label) or Aptima® Multitest Collection Tube (orange label) or Unisex Swab Specimen Collection Tube (white label). Note: Results from the Aptima® combo 2 assay should be interpreted in conjunction with other laboratory and clinical data available to the clinician. For a complete list of assay limitations we recommend that you review the manufacturers package insert, https://www.hologic.com/package-inserts/diagnostic-products/aptima-combo-2-assay-ctng.
Transport container	Aptima® Transport Tube
Transport temperature	Room temperature
Specimen stability	Swabs in Aptima® Transport Tube Room temperature: 60 days Refrigerated: 60 days Frozen: 1 year Urine in Aptima®Transport Tube Room temperature: 30 days Refrigerated: 30 days Frozen: 1 year Liquid cytology ThinPrep®PreservCyt® Preservative Room temperature: 30 days Refrigerated: 30 days Frozen: 1 year ThinPrep®PreservCyt® in Aptima® Transport Tube Room temperature: 14 days Refrigerated: 30 days Frozen: 1 year SurePath™ Preservative Fluid Room temperature: 14 days Refrigerated: 14 days Frozen: Unacceptable
Reject criteria	Transport tubes with 2 swabs • Transport tubes with Non-Aptima® swabs • Swab transport tubes with no swab • Specimens in broken containers • Swab submitted in viral transport media • Urine samples where the fluid level is not between the black fill lines • ThinPrep® PreservCyt® material previously processed for cytology • ThinPrep® PreservCyt® with excess mucus

Reference range(s)

Not detected

LOINC® codes

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Service Area Information

Performing lab & setup schedule

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Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

*The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.

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