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Mycoplasma genitalium NAAT


DNA/RNA
Test performed by: LabPLUS Microbiology


Note: From Monday 28th November, Mycoplasma genitalium screening will be performed on the Hologic Panther system using TMA technology (replacing the in-house Mycoplasma genitalium (DNA based) assay. For resistance testing refer to Mycoplasma genitalium resistance testing in the Test Guide.


Specimen Collection

ONLY use Aptima collection kits for both swabs and urines. Available from Microbiology LabPLUS.

Other swabs or collection tubes (Amies transport media, VTM, E-swabs) cannot be tested.

Always send a dedicated tube for Mycoplasma genitalium testing . There is insufficient  sample to test for Mycoplasma genitalium if testing for other STIs is required.

Females:

Males:
  • Urine specimen
  • Urethral swab
  • Rectal swab

Hologic Aptima Multitest Swab (orange label/pink swab)

After collection:
  1. Insert swab in the Aptima tube
  2. Snap off at the black line
  3. Recap firmly -- do not touch the top foil.
Store and transport at room temperature.

Note: Specimen will be rejected if:
  • Wrong swab is used
  • Foil cap is pierced
  • Swab is folded over
  • More than one swab in tube
  • Leaking sample (swab or urine)
  • Unlabelled specimen
  • Non-Aptima tube received

Hologic Aptima Urine Tube (yellow label)

Used for male and female urine samples, first catch, collected in urine pottle.
After collection:
  1. Transfer urine (using pipette in kit) to the yellow label tube. The volume MUST BE in the fill area (between the black lines)
  2. Recap firmly -- do not touch the top foil.
Store and transport at room temperature.

Note: Specimen will be rejected if:
  • Foil cap is pierced
  • Leaking sample
  • Unlabelled specimen

Avoiding contamination of specimen/collection tube

The specimen collection tube contains a lysis buffer that releases RNA from the organism. If present, potentially high levels for RNA can be present in the sample. It is therefore particularly important to handle the specimen carefully to prevent contamination. If leakage occurs, discard and recollect. Leaking samples arriving in the laboratory will be discarded. Any leakage must be cleaned up using 3% bleach solution.


See also:

Chlamydia/Gonorrhoea/Trichomonas Nucleic Acid Amplification Test (NAAT)

Mycoplasma genitalium resistance testing PCR

STI Specimen Collection Guide


Turnaround Time:

1 to 3 days.

Hours of service: Monday to Friday only

Turnaround time excludes weekends and public holidays.

In most circumstances, the results will be available the next working day.


Assay Method

The Aptima Mycoplasma genitalium assay is an in vitro nucleic acid amplification test (NAAT) for the quantitative detection of ribosomal RNA (rRNA) from Mycoplasma genitalium on the fully automated Hologic Panther Fusion system.


Diagnostic Use and Interpretation

The Panther Fusion assay utilises transcription mediated amplification (TMA) technology and detects target rRNA if present.

Mycoplasma genitalium is a sexually transmitted pathogen which causes urethritis in males, pelvic inflammatory disease (PID), acute endometritis and adnexitis in women. Mycoplasma genitalium accounts for as much as 15-20% of all cases of nongonococcal urethritis (NGU).

All positive samples from the Panther will be further tested by the in-house PCR and sequencing (DNA) method for Mycoplasma genitalium resistance gene mutation detection.


Contact Information

For further information, contact the Microbiology Department via Lablink  or the Clinical Microbiologist:

Lablink contact details

Dr Sally Roberts , Microbiologist: ext 22705   Cellphone 021 674 140
Dr Sharmini Muttaiyah
, Microbiologist: ext 22700   Cellphone 021 615 892
Dr Mary de Almeida , Microbiologist: ext 22700    Cellphone 021 170 9117

Dr Matthew Blakiston , Microbiologist: contact via Lablink
Dr Veronica Playle , Microbiologist: contact via Lablink


Specimen Transport Instructions for Referring Laboratories

Ensure specimens will not leak in transit, otherwise they will be rejected.

Specimens in Aptima tubes are stable and can be transported at room temperature. Other specimens should be stored and transported at fridge temperature.



Last updated at 07:47:05 03/03/2023