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Test Code CT/GC CHLAMYDIA TRACHOMATIS AND NEISSERIA GONORRHOEAE DETECTION BY NUCLEIC ACID AMPLIFICATION

Additional Codes

Software Test Code
Label Text CT/GC
EPIC LAB10220

Performing Laboratory

NorDx Laboratories

Useful For

Detecting Chlamydia trachomatis or Neisseria gonorrhoeae

See test code CTGCU for urine sources and CTGCO for non-FDA approved sources (oral, anal, or rectal swabs).

Method Name

Transcription Mediated Amplification (TMA)

Reference Values

Negative for Chlamydia trachomatis

Negative for Neisseria gonorrhoeae

If positive, reported as positive for Chlamydia trachomatis DNA or positive for Neisseria gonorrhoeae DNA.

Days and Times Test Performed

Monday through Friday

Report Available

3 business days maximum

Profile Information

Individual Test Description

CHLAMYDIA PROBE
GONORRHEA PROBE
SOURCE, PROBE

Specimen Type

Submit one of the following:

  • Vaginal/Genital

  • Endocervical Swab
  • Male Urethral Swab 

Preferred Container

Aptima® Multitest Swab Specimen Collection Kit 

Aptima® Unisex Swab Specimen Collection Kit

 

Specimen Collection and Handling

Submit only one of the following:

 

VAGINAL SWAB (Preferred Female Specimen):

Collect using the Aptima® Multitest Swab Specimen Collection Kit, supplied by NorDx, as follows:

1. Insert dry swab into vagina (do not pre-wet in PCR media) and rotate swab for 30 seconds to ensure adequate sampling.

2. Transfer swab to the tube of Aptima® PCR Medium and break swab into the tube at the scored black line on the shaft.

3. Leave swab in the transport medium and replace the tube cap securely to prevent leaking.

4. Label the transport tube according to policy and transport to the lab for testing.

5. SPECIMEN SOURCE IS REQUIRED ON REQUEST FORM FOR PROCESSING

 

ENDOCERVIX (Alternate Female Specimen):

Collect using the Aptima® Unisex Swab Specimen Collection Kit, supplied by NorDx, as follows:

1. Remove excess mucus from the exocervix using one of the swabs provided in the collection kit and DISCARD this swab.

2. Insert the second swab into the endocervix and rotate for 15 – 30 seconds to ensure adequate sampling.

3. Transfer swab to the tube of Aptima® PCR Medium and break swab into the tube at the scored black line on the shaft.

4. Leave swab in the transport medium and replace the tube cap securely to prevent leaking. (Cause for rejection: receipt of transport medium with no swab.)

5. Label the transport tube according to policy and transport to the lab for testing.

6. SPECIMEN SOURCE IS REQUIRED ON REQUEST FORM FOR PROCESSING

Vaginal swab is the optimal female specimen type for this assay. Use of other specimen types such as First-catch Urine, ThinPrep vial, or M-4 endocervical samples may reduce assay sensitivity.

Replens® lubricant, spermicidal agents and feminine powder sprays may interfere with the assay lead to a result of INVALID. These products should not be used prior to specimen collection.

 

OTHER ACCEPTABLE SPECIMENS INCLUDE:

SOURCE TYPES: Cervical, Urethral, Penile, Vaginal.

1. Endocervical swab in M-4 transport media

2. BD ProbeTec swab, ThinPrep® vial.

These specimen types are not FDA-Approved and assay sensitivity may be affected.

 

This test has been approved by the U.S. Food and Drug Administration (FDA) for use with the following specimen types:

1) self-collected vaginal swabs collected with a Aptima PCR Female Swab Sample kit in a clinical setting,

2) male urine specimens that have been stabilized in Aptima PCR media within 24 hours of collection. Use of other specimen types may adversely affect assay performance.

See test code CTGCU for urine sources and CTGCO for oral, anal, or rectal swabs.

Rejection Information

Receipt of transport medium with no swab. Possible rejection due to cervical mucus present in specimen.

Specimen Stability Information

Specimen Type: 

  • Refrigerated or Room Temperature: 60 days
  • Frozen: 90 days

Add On Capable

Yes

Advance Beneficiary Notice Requirements

No ABN Required

CPT Code Information

CPT Code

CPT Description

CPT Disclaimer

87491 Infectious Agent Detection by Nucleic Acid (DNA or RNA), Chlamydia trachomatis, Amplified Probe Technique  
87591 Infectious Agent Detection by Nucleic Acid (DNA or RNA), Neisseria gonorrhoeae, Amplified Probe Technique  

Keywords

CHLAMYDIA TRACHOMATIS

GC/CHLAMYDIA

NEISSERIA GONORRHOEAE AND CHLAMYDIA TRACHOMATIS BY NUCLEIC ACID AMPLIFICATION

Performing Laboratory Location

NorDx Laboratories