Mantoux Test

Mantoux Test

Mantoux Test, The Mantoux skin test determines if the patient has ever been exposed to Mycobacterium tuberculosis. The health care provider injects the purified protein derivative (PPD) with the m tuberculosis antigen, into the Patient’s forearm The Mantoux test or Mendel. The Mantoux test is a tool for screening for tuberculosis and tuberculosis disappear diagnosis. It is one of the major tuberculin skin tests used around the world, largely replacing multiple. Puncture tests such as the time test. Tuberculosis (TB) skin test sometimes called a Mantoux is a simple, harmless way to find out of you have a latent TB infection.

Causes Of Mantoux Test:

Principle of Mantoux Test:

It is the commonest test used to screen for latent tuberculosis infection and depends on intradermal injection of a specified quantity of internationally standardized purified protein derivative (PPD) of tuberculin.

Side Effect of Mantoux Test:

  • Blistering, crusting, or scrabbling at the injection site Swelling and redness of arm.
  • A deep, dark purple bruise at the injection site (occurring up to 3 days after the skin test).
  • Difficult breathing.
  • Hand lump at the injection site.
  • Start Heeding at the injection site.

Normal Range:

The normal range of the Mantoux Test is 0-60mm, with a mean of 9.4mm.

What is Being Examined:

  • Antibodies to be tuberculosis antigens.
  • X-ray is taken to diagnose.

Purpose of Mantoux Test:

To identify if the Patient is or was ever exposed to tuberculosis.

Mantoux Test


The Patient exposed his / her forearm The site is cleaned with 70% isopropyl alcohol. A needle is inserted slightly under the upper layer. If the Skin contains 0.1ml PPD (Purified Protein Derivative). The site remains uncovered. Read the result after 72 hours. Measure the diameter of indurations and erythema using a ruler along the axis of the forearm in mm.


  • Take reading after 3 days.
  • Color without induration is not included in the measure.
  • Use a ruler to take a reading.
  • Mention the measurement along with positive and negative results.
  • Less than 5 millimeters (mm) is considered a negative test result. A negative test does not mean that the patient is not infected with M. tuberculosis.


It can take up to 20 weeks following the infection for the immune system to develop antibodies
other tests are also performed for Tuberculosis like:

  • ICT Test from blood.
  • Gene expert (PCR level).
  • Sputum
  • X-ray diagnose

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