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Latex Agglutination

Clinical System Name

Antigen Detection (Strep Group B)


group b strep
ID By Serology
latex agglutination
strep b
Strep Group B Antigen Detection

Sample Requirements

Specimen: Whole Blood 

Container(s): Red, Gold SST Microtainer

Preferred Vol: 2 mL 

Minimum Vol: 0.5 mL 



Specimen: CSF

Container(s): Sterile Screw-capped Container

Preferred Vol: 1 mL 

Minimum Vol: 0.3 mL 


Note: The Latex agglutination test is available for Strep Group B on CSF and serum.


Processing Instructions

Reject due to: Received room temperature

Spin: Y

Aliquot: Y

Temp: -20 C

Storage location: Aliquot at least 1 mL CSF or serum into a sterile container then freeze at -20.


Off-site collection:  Send serum or CSF frozen.


Specimen Type Temperature Time
Serum or CSF Room temp 2 h
  Refrigerated 48 h
  Frozen 7 d



STAT Performed TAT
N Daily 3 - 5 d


Performing Laboratory

Quest Diagnostics - Nichols Institute



Quest Diagnostics - Nichols Institute

33608 Ortega Highway
San Juan Capistrano, CA 92690-6130

Phone Number: (800) 553-5445


Reference Range

Not detected


Method: Latex Agglutination (Liatest)

Analytical Volume: None specified


CPT Codes


Send Out Instructions


Reference Test Name: Streptococcus Group B Antigen Detection
Reference Test Number: 4423
Instructions: Send out Mon - Fri with Quest courier. Keep a copy of the PKL for our records..