|
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Chlamydia trachomatis/Neisseria gonorrhoeae RNA, TMA, Conjunctiva
Test CodeCPT Codes
87491, 87591
Preferred Specimen
Minimum Volume
Instructions
Specimens must be collected using an Aptima Multi-Test collection kit (orange label), Aptima Unisex Swab Specimen collection kit (white label), or UTM. To ensure collection of an adequate specimen, epithelial cells lining the conjunctiva should be obtained. To that effect, a cleaning swab should be used to remove and discard excess mucus prior to specimen collection. Submit one swab per collection tube.
Note: Results from the Aptima Combo 2 Assay should be interpreted in conjunction with other laboratory and clinical data available to the clinician.
The Aptima Combo 2 Assay is not intended for the evaluation of suspected sexual abuse or for other medico-legal indications.
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 Temperature
Specimen Stability
Room temperature: 30 days
Refrigerated: 30 days
Frozen: 30 days
UTM
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Methodology
Transcription-Mediated Amplification (TMA)
Setup Schedule
Reference Range
Chlamydia trachomatis RNA, TMA, Conjunctiva | Not Detected |
Neisseria gonorrhoeae RNA, TMA, Conjunctiva | Not Detected |
Clinical Significance
C. trachomatis and N. gonorrhoeae are two of the most common causes of sexually transmitted infections, and both organisms can cause infectious conjunctivitis. Newborns are especially at risk for C. trachomatis or N. gonorrhoeae conjunctivitis if born to a mother with a genital infection.
Symptoms of C. trachomatis or N. gonorrhoeae conjunctivitis may include eye redness, eye lid swelling, and discharge. Symptoms in newborns infected at birth typically appear within two weeks.
A Not Detected (negative) result means that C. trachomatis or N. gonorrhoeae RNA was not present in the specimen above the limit of detection. A negative result does not rule out the possibility of infection and should not be used as the sole basis for patient management decisions.
1. CDC Sexually Transmitted Infections Treatment Guidelines, 2021. MMWR July 23, 2021.
2. Conjunctivitis (Pink Eye) in Newborns. Centers for Disease Control and Prevention. Last Reviewed: January 4, 2019. https://www.cdc.gov/conjunctivitis/newborns.html#:~:text=Conjunctivitis%20(Pink%20Eye)%20in%20Newborns&text=Newborns%20with%20symptoms%20of%20conjunctivitis,conjunctivitis%20can%20be%20very%20serious
3. Kreisel, K. et al. Keeping an Eye on Chlamydia and Gonorrhea Conjunctivitis in Infants in the United States, 2010-2015. Sex Transm Dis. 2017 Jun; 44(6): 356-358.