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Clear
 
Test Code:
090-40-0640-01

Order Name:
Group B Streptococcus (GBS) C/S (Rectal)

 
Useful For:
Screening for maternal colonization with Streptococcus agalactiae at 35 to 37 weeks gestation to decrease the risk of infection by Streptococcus agalactiae in the infant
 
Methodology:
Conventional Culture Technique
 
AliasesName:
Beta-Hemolytic Strep
Strep Group B
Group B streptococcus
Group B streptococci
S. agalactiae
Streptococcus agalactiae

Beta Strep
GBS
 
 
 
Test Code:
090-40-0640-01

Order Name:
Group B Streptococcus (GBS) C/S (Rectal)

 
Patient Preparation:
Medications: Do not use antibiotics before collection of specimen
 
Collection Specimen Or Container:
Rectal swab/ Stuart transport medium (จุกสีขาว)
 
Specimen Testing Type:
Rectal swab
 
Sub Mission Container:
Stuart transport medium  (จุกสีขาว)
 
Rejection Criteria:
Specimen in formalin or dry swab will be reject.
 
Specimen Stabillity:
Specimen Type Temperature Time
Rectal swab Room temperature, 18oC to 25oC 24 hours
 
 
 
Test Code:
090-40-0640-01

Order Name:
Group B Streptococcus (GBS) C/S (Rectal)

 
Method detail:
Conventional Culture Technique
 
Schedule:
Tested daily (24 hours)
 
Turnaround Time:
Received specimen to report within 3 days
 
Performing Location:
Microbiology, Laboratory Department Tel. 14171
 
Specimen Retention Time:
7 days
 
 
 
Test Code:
090-40-0640-01

Order Name:
Group B Streptococcus (GBS) C/S (Rectal)

 
 
Clinical Information:
Streptococcus agalactiae (group B streptococcus) is ine of the main causes of serious infection, such as sepsis, meningitis, and pneumonia in newborn babies, as well as an etiological agent in diabetic adults or chronic patiens. It is now universally accepted that in most cases the transmission from a carrier mother to the fetus occurs in the uretus through ascending transmission right before or during delivery. The identification of maternal colonization during the last weels of pregnency is extremely important, as the administration of preventive treatment upon delivery, thus the fetus protection from a possible infection, will depend on such identification. The guildlines developed bu the US Centers for Diseases Control provide indications for optimal treatment of samples to be analyzed for suspected GBS. Specifically, for the detecion of anal-genital carrier status in pregnant woman, sample should be taken on the 35th to 37th pregnancy week, with a vaginal swab and a second anal-rectal swab.
 
Reference Value:
No Streptococcus agalactiae were isolated
 
Interpretation:
Streptococcus agalactiae were isolated
 
Clinical Reference:
  1. Amy L. Leber, editor. Clinical Microbiology Procedure Handbook 4th Edition. Washington DC: American Society for Microbiology; 2016
  2. James H. Jorgensen, Michael A. PFALLER. Manual of Clinical Microbiology 11th ed. Washington, DC: ASM Press; 2015
  3. https://www.mayocliniclabs.com (Retrieved: 29 Jan 2019)