PrEP Use Only: Chlamydia/Gonococcus, Rectal Swab, NAA
Also known as: Pre-exposure prophylaxis screening for Ct/GC, Rectal Source
Use
This test is used for the detection of Chlamydia trachomatis and Neisseria gonorrhoeae in patients who are eligible for or who are receiving pre-exposure prophylaxix for HIV (PrEP).
Special Instructions
Not provided.
Limitations
The test is designed specifically for rectal samples. It cannot be used with swabs collected from other body sites or samples not collected using the Aptima swab transport tube. Incorrect specimen storage, handling, or transport can result in test rejection. Additional confirmatory or reflex tests could extend the usual turnaround time.
Methodology
PCR-based (NAA)
Biomarkers
LOINC Codes
- 80365-0 - C trach+GC rRNA Anorectl Ql NAA+probe
- 80363-5 - C trach DNA Anorectl Ql NAA+probe
- 80366-8 - N gonorrhoea rRNA Anorectl Ql NAA+probe
- 11502-2 - Laboratory report
Result Turnaround Time
2-3 days
Related Documents
For more information, please review the documents below
Specimen
Rectal Swab
Volume
1 swab (rectal)
Minimum Volume
1 swab (rectal)
Container
Aptima® swab specimen transport tube
Collection Instructions
Insert the blue-shafted swab, labeled 'unisex collection swab for endocervical and male urethral specimens', 2 inches to 4 inches 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 swab, two swabs or swab not supplied by Hologic; Aptima swabs greater than 60 days from collection; any transport device other than an Aptima swab transport.
Other tests from different labs that may be relevant