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Chlamydia trachomatis and Neisseria gonorrhoeae (CTNG) by Transcription-Mediated Amplification (TMA) with Reflex to CT/NG Confirmation
Ordering Recommendation
Detect Chlamydia trachomatis and Neisseria gonorrhoeae in a variety of specimens. Positive results are confirmed using an alternate nucleic acid target.
Methodology
Qualitative Transcription-Mediated Amplification
Performed
Sun-Sat
Reported
1-10 days
New York DOH Approval Status
Specimen Required
MultiTest Swab or ThinPrep Collection: Patient must be 14 years of age or older.
Vaginal specimen collected with pink swab from Aptima MultiTest Swab Specimen Collection kit (ARUP supply #55224 PK/50 or #55229 PK/10) available online through eSupply using ARUP Connect™ or contact ARUP Client Services at (800) 522-2787.
Also acceptable: Cervical or male urethral specimen collected with blue swab from Aptima Unisex Swab Specimen Collection kit (ARUP supply #28907 PK/50 or #54555 PK/10), first catch urine in sterile container or cervical brush in ThinPrep Pap test collection kit.
Refer to "Sample Collection for the Diagnosis of STD" under Specimen Handling at www.aruplab.com for specific specimen collection and transport instructions.
Swab: Place swab in Swab Specimen Transport Tube, break shaft off at scoreline then recap tube.
Urine: Transfer 2 mL urine within 24 hours to Aptima Urine Specimen Transport Tube (ARUP supply #28908 PK/50 or #54556 PK/10) available online through eSupply using ARUP Connect ™ or contact ARUP Client Services at (800) 522-2787. Liquid level must be between fill lines on tube.
ThinPrep: Vortex ThinPrep PreservCyt solution and transfer 1 mL to an Aptima Specimen Transfer Tube (ARUP supply #42711) available online through eSupply using ARUP Connect™ or contact ARUP Client Services at (800) 522-2787. To reduce the potential for contamination, ThinPrep specimens should be poured off, using sterile technique, into the Aptima Specimen Transfer Tube prior to Cytology Testing.
Refrigerated
Large white swab included in Aptima Unisex Swab Specimen Collection kit is for preparatory cleaning of the endocervix and is unacceptable for testing. Specimens in any transport media other than indicated above. Specimens in swab transport media without a swab.
Specimen source is required.
MultiTest or Unisex Swab: Ambient: 2 months; Refrigerated: 2 months; Frozen: 1 year
Aptima Urine Specimen Transport Tube: Ambient: 1 month; Refrigerated: 1 month; Frozen: 3 months
Aptima Specimen Transfer Tube: Ambient: 2 weeks; Refrigerated: 1 month; Frozen: 1 year
ThinPrep: Ambient: 1 month; Refrigerated: 1 month; Frozen: Unacceptable
Reference Interval
Negative
Interpretive Data
This test is intended for medical purposes only. It is not intended for the evaluation of suspected sexual abuse or for other medicolegal indications. Refer to the most recent CDC recommendations for patients in whom a false positive result may have adverse psychosocial impact.
Positive results will be confirmed with alternative nucleic acid target assay.
Depends on Specimen/Source/Method
Note
If Chlamydia trachomatis and/or Neisseria gonorrhoeae by TMA is positive, then Chlamydia and/or Gonorrhea alternate target TMA will be added for confirmation. Additional charges apply.
Hotline History
CPT Codes
87491; 87591. If reflexed add 87491 or 87591
Components
| Component Test Code* | Component Chart Name | LOINC |
|---|---|---|
| 0060755 | APTIMA Media Type | 74384-9 |
| 2005507 | Specimen Source | 31208-2 |
| 2011165 | C. trachomatis by TMA with Confirm | 43304-5 |
| 2011166 | N. gonorrhoeae by TMA with Confirm | 43305-2 |
Aliases
- Chlamydia and Gonorrhea panel with confirmation
- Chlamydia and Gonorrhea PCR
- Combo 2
- CT/GC PCR
- CT/NG PCR
- Gonorrhea
- NAA
- Nucleic Acid Amplification Test (NAAT)
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