STREP B SCREEN

Mnemonic

GBS

Synonym

Beta Strep Group B Culture

Guidelines

This is a prenatal screening test for Group B streptococcus carriage. Collect this test at 35-37 weeks’ gestation. For use with genital and rectal swabs. It is recommended to collect from both Vaginal and Rectal sites. Cervical specimens or specimens collected with a speculum are NOT recommended.

Specimen Collection Requirements

Collect

Use culture collection and transport swab

Handling

Indicate specimen sources.

Preferred Volume

1 or 2 swabs in culture transport system

Minimum Volume

1 swab in culture transport system

Transport

Room temperature

Rejection Criteria

Frozen specimen, nonsterile or leaking containers

Stability

Ambient: 72 hours; Refrigerated: 72 hours; Frozen: Unacceptable

Testing Information

Performed

7 days/week

Method

Standard Bacterial Culture with broth enhancement

Referral Lab

Samaritan Health Services

Reference Values

Reference Values

No beta Strep Group B

CPT Codes

87081

Last Updated: Monday, September 17, 2018 02:29:40 PM