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Oregon Health Authority

Lab Test Details

Chlamydia trachomatis and Neisseria gonorrhea, TMA amplified

Updated

5/5/2023

Other NamesChlamydia (CT) Combo Test; Chlamydia and Gonorrhea Screen; Gonorrheae (GC) Combo Test
How to OrderOn the Virology/Immunology Test Request Form (OHA0042), in the CT/GC section, choose the "Chlamydia/Gonorrhea by NAAT" box.
AvailabilityAll clients
PerformedDaily on regular business days
Time to ReportingWithin 3 working days after receipt of specimen
CPT Code87801

Specimen Collection Details

CollectionDetailed instructions for collecting, storing, and transporting each acceptable specimen type is provided in the OSPHL Instructions for CT/GC Testing (pdf).
Optimal Volume2 mL urine, not applicable for swabs.
Minimum Volume2 mL urine, not applicable for swabs.
HandlingAll sample types may be stored and transported at 4-30°C.  All sample types are stable for 30 days. 
TransportAll sample types may be stored and transported at 4-30°C.  All sample types are stable for 30 days. Transport at ambient or refrigerated temperatures.
Rejection CriteriaSpecimens are subject to the requirements of the OSPHL Specimen Submission Policy (pdf).

Specimen rejection criteria specific to CT/GC samples is provided in the OSPHL Instructions for CT/GC Testing (pdf).
Comments Original material submitted for testing is retained for 9 calendar days after receipt at the laboratory.

The OSPHL has validated the modification of the current FDA approved procedure for CT/GC testing to include rectal and pharyngeal swabs. Only specimen sources detailed in the OSPHL Instructions for CT/GC Testing document provided above are acceptable for testing at the OSPHL.

Method Details

Methodology
Transcription-Mediated Amplification; Nucleic Acid Hybridization
Performance
Specifications
Please see attached OSPHL Instructions for CT/GC Testing (pdf).

Change Log

5/5/2023
Clarified How to Order; Edited Comments
3/15/2021

Reviewed; no changes made