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Test Code CTNG Chlamydia Trachomatis / Neisseria Gonorrhoeae            

Methodology

Multiplex Polymerase Chain Reaction (PCR)

Performing Laboratory

St. Clair Hospital Laboratory

Specimen Collection, Transport and Storage:

  • Specimen Types: Female and male urine, patient-collected vaginal swabs (collected in a clinical setting), clinician-collected endocervical swabs, and female and male pharyngeal and rectal swabs.
  • Collection Instructions:
    • Xpert® Swab Specimen Collection
      • Obtain Xpert® Swab Specimen Collection Kit.
      • Open kit and obtain large cleaning Swab.
      • Open package and obtain small collection swab from wrapper.
      • Insert small collection swab into endocervical canal (Remove excess mucus from cervix and area using the large cleaning swab.  Discard the swab.), throat, or rectum and rotate clockwise for 10-30 sec.  Remove swab.
      • Place small collection swab into pink cap transport tube, breaking swab at scoreline into tube.
      • Cap tube and label with patient ID, and date as required.
    • Urine Specimen Collection: First Catch Urine sample
  • Specimen Stability:
    • Urine Samples:
      • First catch female urine specimen must be transferred to the Xpert Urine Transport Reagent tube within 24 hours of primary collection if shipped and/or stored at room temperature.
      • First catch male urine specimen must be transferred to the Xpert Urine  Transport Reagent tube within 3 days of primary collection if shipped and/or stored at room temperature.
      • First catch male and female urine specimen NOT transferred to the Xpert Urine Transport Reagent tube (unpreserved urine specimen) can be shipped and/or stored for up to 8 days at 4 °C ± 2°C.
      •  First catch female urine specimen that is transferred to the Xpert Urine Transport Reagent tube (preserved female urine specimen) can be shipped and/or stored up to 45 days at 2 °C to 15 °C, or up to 3 days at 2 °C to 30 °C before testing with the Xpert CT/NG test.
      • First catch male urine specimen that is transferred to the Xpert Urine Transport Reagent tube (preserved male urine specimen) can be shipped and/or stored up to 45 days at 2 °C to 30 °C before testing with the Xpert CT/NG test.First catch female urine specimen is stable for 24 hrs if transported at room temperature (18-30°C).
    • Xpert Swab Specimen Collection Kit:
      • Swab samples stored in Xpert Swab Transport Reagent tubes should be transported to the laboratory at 2°C to 30°C.
      • Swab samples in Xpert Swab Transport Reagent tubes are stable up to 60 days at 2 °C to 30 °C before testing with the Xpert CT/NG test.

Reference Values

Negative

Useful For

Rapid detection of Chlamydia trachomatis and/or Neisseria gonorrhoeae to aid in the diagnosis of chlamydial and gonorrheal disease