Chlamydia/Gonococcus, NAA With Reflex to Trichomonas vaginalis, NAA
Use
Diagnosis of Chlamydia trachomatis and Neisseria gonorrhoeae infection. If a positive result is obtained for either Chlamydia trachomatis or Neisseria gonorrhoeae, testing for Trichomonas vaginalis is performed.
Special Instructions
The test involves nucleic acid amplification (NAA) for reliable detection from various specimen types. Vaginal and endocervical swabs, male urethral swabs, and first-void urine samples are appropriate. Specimen collection kits, such as the Gen-Probe® Aptima® and ThinPrep® liquid cytology vial, are needed, with specific handling instructions for each method. Proper specimen collection is crucial for accurate detection and reducing false negatives.
Limitations
Specimens cannot be collected for this test if they are also being used for routine chemistry or urine culture tests, as this requires a different collection technique (clean catch midstream). The test requires a first-catch urine sample for accurate results, as other methods may dilute test sensitivity. Conditions such as incorrect specimen transport, outdated collection devices, or improper volumes can lead to rejection or false results.
Methodology
PCR-based (Nucleic acid amplification (NAA))
Biomarkers
LOINC Codes
- 64017-7
- 43304-5
- 43305-2
Result Turnaround Time
2-4 days
Related Documents
For more information, please review the documents below
Specimen
Vaginal Swab
Volume
One swab
Minimum Volume
One swab
Container
Gen-Probe® Aptima® swab
Collection Instructions
Collect vaginal fluid sample using the Gen-Probe® Aptima® Vaginal Swab Kit. Rotate swab for 10 to 30 seconds against the vaginal wall to absorb fluid. Break swab shaft into transport tube and seal.
Patient Preparation
Patient should not have urinated for at least one hour prior to specimen collection.
Storage Instructions
Room temperature
Causes for Rejection
ITM Inappropriate specimen transport conditions; expired transport device; specimens with incorrect source; specimen with fixative or additives.