Widal Test (Tube Agglutination)

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4.8
NABL, CAP, ISO
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Overview
Test Results & Interpretations

Overview of Widal Test (Tube Agglutination)

Test Description

Typhoid fever also called enteric fever is caused by bacterium Salmonella Typhi and is usually transmitted through foods and drinks contaminated with faecal matter.You should get this test done if you have symptoms which suggest typhoid fever like fever, abdominal pain, headaches, rose spots. It helps to make presumptive diagnosis of typhoid fever.

Why Get Tested

  1. If you have signs or symptoms of typhoid (enteric) fever like headache, high fever, abdominal pain, diarrhea, weight loss or skin rashes called rose spots 
  2. As a part of fever panel 

Precautions

  • No special preparation required

What Results of Widal Test (Tube Agglutination) mean?

Interpretations

  • If the TO antigen titre is greater than 1:160 in an active infection, the widal test is positive and indicates typhoid fever 
  • If the TH antigen titre is greater than 1:160 in past infection or immunized persons, the widal test is positive and indicates typhoid fever
  • If these antigens are negative, then the widal test is considered to be negative and there is no typhoid fever
    A single Widal test holds little clinical applicability due to the several cross reacting infections, which include malaria. If other tests, such as serology or bacteriologic culture, are unavailable, then inferences such as a fourfold rise in the titre {For example from 1:30 to 1:120} during the course of an infection, or a change from an IgM reaction of a specific titre to an IgG reaction of the same titre in the least, would signify typhoid reaction

Provided By

NABL

CAP

ISO

We focus on providing patients quality diagnostic healthcare services in India. Through our network, we offer patients convenient locations for their diagnostic healthcare services and efficient service. With over 3368 diagnostic and related healthcare tests and services offered, we believe we are capable of performing substantially all of the diagnostic healthcare tests and services currently prescribed by physicians in India. Our key competitive strengths are: Business model focused on the patient as a customer and an established consumer healthcare brand associated with quality services, in a market where patients generally choose their diagnostic healthcare service provider. Well-positioned to leverage upon one of the fastest-growing segments of the Indian healthcare industry. A network whose growth yields greater economies of scale, combined with a hub and spoke model that is scalable for further growth. Centralized information technology platform that fully integrates our network and is scalable. Attractive financial performance, financial profile and return on invested capital. Experienced leadership team with strong industry expertise and successful track record. Some of our laboratories have achieved International Organization for Standardization, or ISO, certification for their quality systems. Our National Reference Laboratory has obtained ISO 9001:2008 certification (for the performance of routine and advanced diagnostic pathology testing services, including clinical trials), ISO 15189:2007 (for quality management in medical laboratories), ISO 15189:2012 certification (in the field of medical testing) and ISO 27001:2013 certification (for establishing an effective information management system that maintains and processes information security at our data center).

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