Chlamydia trachomatis, Neisseria gonorrhoea, Trichomonas vaginalis NAATs (Molecular Microbiology)
Collection container (including preservatives):
Aptima Collection System
Specimen type: Swab, urine
Collection: Specimens should be collected and
handled following the recommended guidelines on the collection
Yellow = Urine Collection
White = Female endocervical and urethral. Male urethral.
(White shafted swab is cleaning swab. Blue/or Pink shafted swab is
for sample collection).
Orange = Vaginal Swab Collection
- Endo cervical /Urethral swabs: only use the white shaft swab
for cleaning the cervix and then discard. Use blue shaft swab for
taking the sample and then send to laboratory in Aptima tube.
- Urethral swabs/urine: should not urinate for one hour prior to
- All swabs: Remove cap of collection tube; place swab in
collection tube; break off swab at the mark THIS IS IMPORTANT!);
replace cap and tighten; shaft of swab must not
obstruct cap; do not perforate foil cover on
- Urines: remove cap of collection tube; transfer urine using
disposable pipette provided; fill to the window on the side of the
collection tube; replace cap and tighten.
Specimen transport: Transport at ambient
temperature via porter, courier, Royal Mail or DX compliant with
IATA packing instruction 650
Type and volume of sample: 2mL Urine
Special precautions: Patient consent must be
obtained for both Chlamdyia and Gonococcal testing. Single tests
cannot be accepted for either Chlamydia or Gonorrhoea. If
consent for both cannot be obtained, please contact the laboratory
for information on alternative laboratories that provide a single
Measurement units: Relative Light Units
Biological reference units: Not applicable
Turn round time for provisional result (calendar
days): 3 days
Turn round time to final result (calendar
days): 4 days. All reactive tests are confirmed. For
urgent tests please contact the laboratory
Clinical decision points: Not applicable
Factors known to significantly affect the
results: Samples must be kept at ambient temperature
False negative results may occur for a variety of reasons, for
example inappropriate timing of sample collection, inappropriate
sample, presence of virus below the detectable limit of the assay.
New and emerging variants may also occur which may not be detected
by this assay. Towards the limit of detection of an assay sampling
variation will result in lower reproducibility.