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Mayo Clinic Laboratories

Test Code EGNC Culture, Genital, Female (External), Bacteria

Specimen and Container/Tube

Swab, fluid, or aspirate Site: cervix, vagina, vulva, labia, urethra

Transport swab or sterile container

Collection Instructions

Offsite Collection Instructions

See UCMC Collection Instructions

UCMC Collection Instructions

Specimen Source: Cervix (swab, fluid, or aspirate). This is not an appropriate source for Group B Strep screen.
Specimen Collection: Wipe cervix clean of vaginal secretions and mucus. Using a speculum with no lubricant, compress the cervix. Obtain exudate from endocervical glands.
Specimen Transport: 24 hr, no refrigeration.


Specimen Source: Vagina (swab, fluid, or aspirate). This is not an appropriate source for Chlamydia/GC probe testing or Group B Strep screen.
Specimen Collection: Use speculum with no lubricant. Aspirate or swab material from high on the vaginal wall.
Specimen Transport: 24 hr, no refrigeration.


Specimen Source: Vulva, Labia
Specimen Collection: Clean lesion with saline; do not use alcohol. Remove crust if present. Abrade lesion to obtain fluid or scrape beneath extending border of lesions.
Specimen Transport: 24 hr, no refrigeration.


Specimen Source: Urethra
Specimen Collection: Wipe urethra clean with sterile gauze. Obtain exudate or discharge with swab. Alternatively, a swab may be inserted 2 cm inside the urethra for specimen collection.
Specimen Transport: 24 hr, no refrigeration.


See Microbiology Specimen Collection:

  • See category “Genital, Female External”, Table 1 BACTERIOLOGY, CHLAMYDIA, MYCOLOGY, MYCOBACTERIOLOGY (AFB), VIROLOGY

Specimen Handling and Transport Instructions

Transpot Instructions

See UCMC Collection Instructions

Rejection Criteria

Whole blood/unspun samples greater than 6 hours will be
rejected.

Reference Values

Negative

Critical Values

 

All positive  culture

 

 

 

 

All

Test Components

Gram stain

Aerobic culture

Screen for Neisseria gonorrhoeae

Methodology

Conventional culture media

CPT Codes

87070, 87205

LOINC Codes

30587070, 30687205

Turnaround Time

Turnaround Time

Gram stain only: within 1 hour of receipt in Microbiology
lab; if STAT requested.

STAT Turnaround Time

Gram stain only: within 1 hour of receipt in Microbiology lab; if STAT requested.

Day(s) Performed

24/7

STAT DAY(S) AND TIME(S) PERFORMED

Available

Last Reviewed Date

08/12/2022