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Test Code LAB4531 CULTURE, BETA STREP B SCREEN

Infectious

Specimen Type

Vaginal/rectal swab

Preferred Specimen: Eswab (Liquid Amies) is preferred
Alternative specimen: Amies Gel, Liquid Stuart, Stuart Gel

Collection Instructions

Swab both the lower vagina and rectum (through the anal sphincter). Sampling both sites increases detection of colonization substantially compared with sampling the cervix or the vagina without also swabbing the rectum (2010 CDC recommendations).

Turnaround Time

2 days

Test Schedule

Daily

Specimen Processing

Place swab in bacterial transport media

Method

Culture

Reference Ranges

Beta Strep Group B Screen: Negative
Beta Strep Group B Screen: Positive

Synonyms

Beta-Hemolytic Streptococcus; Streptococcus Group B; GBS; Culture, Beta Strep B Screen, Strep B, Strep B Screen, Group B Strep

CPT Codes

87081

Rejection Criteria

Dry swabs

Swabs exposed to freezing or excessive heat