Genital tract swabs

Description: 
High Vaginal Swabs (HVS), Vaginal swabs, Cervical swabs are processed by wet prep microscopy for Trichomonas vaginalis (TV), yeast and WBC, Gram stain for bacterial vaginosis (BV) and isolation, identification and susceptibility testing of any organism likely to be pathogenic. Lower Vaginal Swabs (LVS) and vulval swabs are processed as above except BV gram will not be performed. Penile discharge, urethral, sub-preputial swabs are processed by Gram stain for pus cells and organisms, isolation, identification and susceptibility of any organism likely to be pathogenic. Note wet preps cannot be performed on dry swabs. Turn around time 2-3 days. Bacterial culture is NOT the most sensitive screening test for N gonorrhoea. For screening, an Aptima sample for combined Chlamydia/Gonorrhoea testing performed in virology is usually the most appropriate sample.
Clinical details: 
BV Gram results are only released on patients aged 15-50 years old. TV resullts are not reported on children ≤13 years old.
Synonyms or keywords: 
HVS, LVS, cervical, urethral, sub-prep
Sample type and Volume required: 
High vaginal, low vaginal, vulval, cervical, urethral and penile discharge swabs in Amies (black top) transport medium.
If infection with Chlamydia or Neisseria gonorrhoea is possible or suspected an additional sample will be required, please see Chlamydia trachomatis and Neisseria gonorrhoeae RNA-TMA test for instructions.
Turnaround time: 
2 - 3 days
Special sample instructions: 

Use "Chain of evidence form" if medico-legal case

Storage and transport: 
Place labelled sample in a sealed sample bag and send to Central Specimen Reception (CSR). Do NOT refrigerate.
Contacts:
Infection Sciences Department at St Thomas' Hospital
020 7188 8008
St Thomas' Hospital
North Wing - 5th Floor
Westminster Bridge Road
London SE1 7EH
Core opening hours: Monday-Friday 0900-1730


For clinical advice or interpretation of results, please contact the laboratory in the first instance.

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Last updated: 27/11/2017