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HelpTest Code CTGC Chlamydia/GC, Amplified DNA (Unacceptable on children <14yrs)
Additional Codes
Epic EAP: LAB1376
Epic Description: CHLAMYDIA / N.GONORROHEAE BY AMP DNA
Synonym
CT/GC Amplified Probe
Chlamydia DNA
Neisseria DNA
CT/NG
Collection Limitations
This test cannot be performed on patients <14 years of age.
For testing in children ≥4 to ≤14 years of age, refer to LAB10290 for ordering information.
Culture collection and transport devices are available through Lab Client Services at (504) 842-4623.
For children ≥4 to ≤14, only urine specimens are acceptable. 7mLs of Urine samples must be transferred to a Urine Transport tube within 24 hours. The test order code is CGRNA (LAB10290) and is sent out to a reference lab. The Aptima collection devices are available through Lab Client Services at (504)842-4623.
CEPHEID/ROCHE COLLECTION SWAB IS UNACCEPTABLE FOR SENDOUT TESTS.
Specimen Type
Vaginal/Endocervical
Urine
Throat
Rectal
Specimen Required
ROUTINE Testing for Chlamydia/GC, Amplified DNA (Unacceptable for <14 years)
| Primary Source: | Vaginal, Throat, or Rectal | ||
| Collection Container | Preferred Volume | Minimum Volume | |
| Preferred |
Cobas PCR Media Uni Swab collection kit |
1 swab | 1 swab |
| Primary Source: | Endocervical | ||
| Collection Container | Preferred Volume | Minimum Volume | |
| Preferred | Cobas PCR Media Dual Swab Sample kit (1 swab for cleaning, smaller swab for specimen collection | 1 swab | 1 swab |
| Primary Source | Urine | ||
| Collection Container | Preferred Volume | Minimum Volume | |
| Preferred | Cobas PCR Urine collection | 7 ml | 6 ml |
| Alternate | Sterile container (aliquot to Cobas collection device) | 20 ml | 6 ml |
STAT Testing for Chlamydia/GC, Amplified DNA (Unacceptable for <14 years)
| Primary Source: | Vaginal or Endocervical | ||
| Collection Container | Preferred Volume | Minimum Volume | |
| Preferred |
Cepheid Xpert Swab G Collection device |
1 swab | 1 swab |
| Primary Source: | Urine | ||
| Collection Container | Preferred Volume | Minimum Volume | |
| Preferred | Cepheid Xpert Urine Collection device | 7 ml | 7 ml |
| Alternate | Sterile container (aliquot to Cepheid collection device) | 20 ml | 7 ml |
| Primary Source | Vaginal, Throat, or Rectal | ||
| Collection Container | Preferred Volume | Minimum Volume | |
| Preferred | Cobas PCR Media Uni Swab collection kit | 1 swab | 1 swab |
Specimen Stability
Vaginal swabs in Cepheid Transport collection devices are stable for 60 days at room temperature. Urine specimens - transfer 7mls to Cepheid Urine collection device within 24 hours of collection. Urine samples in urine collection device are stable for 3 days at room temperature.
Instructions for Collection and Transport
Collect female specimens by using the large swab for cleaning and then the small swab for collecting specimen. Avoid excessively bloody specimens.
Collect first catch urine. Urine must be aliquoted to Cepheid Urine containers within 24 hrs of collection. Transport refrigerated on freeze packs or at room temperature. Refrigerate if holding overnight. Samples collected in urine collection devices can be held at room temperature.
Performing Lab
Microbiology Lab
Alternative testing - Sendout Lab
Assay Frequency
Monday-Friday
Routine Turnaround Time
5-8 days excluding weekends and holidays. STAT, ED, Urgent Care will be reported within 2-4 hours after receiving in Microbiology.
CSR Storage Requirements
Transport specimen to Microbiology at room temperature.
CPT Code Information
87494
Patient Preparation
Females -Clean vaginal area before collecting specimen.
For Urine specimens – Collect first catch; not midstream.