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St. John Health System
Lab Catalog


Index:

Febrile Agglutinins (Widal, Salmonella, Thyphoid)

Order Name FEBRIL AGG
Test Number: 5508975
Revision Date 09/01/2009
Test Name Methodology LOINC Code
Paratyphoid A
Direct Agglutination 22516-9 
Paratyphoid B
Direct Agglutination 22520-1 
Typhoid O
Direct Agglutination  
Paratyphoid a
Direct Agglutination  
Paratyphoid b
Direct Agglutination  
Typhoid H
Direct Agglutination  
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 4 mL (1.5) Serum Clot Activator SST Refrigerated
Instructions Stability: Room temperature: 1 Week, Refrigerated: 2 Months, Frozen: 1 Year
GENERAL INFORMATION
Testing Schedule 5 days a week. 
Expected TAT 3-5 Days 
Clinical Use Agglutinin titers to somatic and flagellar antigens begin to rise during the second week of infection and peak by the third week. Titers <=1:160 are considered presumptive evidence of S. typhi infection (at an undetermined time). A four-fold increase in titer is required for serodiagnosis of recent infection. 
CPT Code(s) 86000x6
Service Provided By Labcorp Oklahoma, Inc.
Lab Section Reference Lab