TB-PCR Lab Test

MTB by RT PCR
Book Lab Test At Home
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Clinical Definition of TB-PCR

The TB-PCR is one of the tests that helps diagnose and confirm an infection of Tuberculosis. Tuberculosis is a disease caused by the bacteria Mycobacterium tuberculosis that generally attacks the lungs however possibly can affect other parts of the body. It may cause pulmonary tuberculosis and other infections like ones of the skin and abdomen. It is contracted through the air when people who have the disease cough, sneeze, or spit.

The other widely used tests used in the diagnosis & screening of Tuberculosis infection are:

AFB, smear examinationCulture, Mycobacterium Tuberculosis Mycobacterium antibody panel (TB-IgG, IgM, IgA)Quantiferon TB Goldmantoux test

When do you expect results?

24 to 36 Hours

Why Get Tested?

The TB-PCR test is ordered to diagnose and detects M.Tuberculosis from other mycobacteria. It also helps monitor treatment for TB.

Reason to take TB-PCR Test

Symptoms observed and scanned for include:

  • Unexplained weight loss
  • Fatigue
  • Fever
  • Night sweats
  • Chills
  • Loss of appetite
  • Prolonged and Persistent cough
  • Blood in sputum
  • Painful breathing
  • Painful coughing

When TB severely spreads in the lungs it shows the following symptoms include:

  • Chest pain
  • Coughing up blood
  • Prolonged cough for more than three weeks

Preparations Needed for TB-PCR Test

Preparatory instructions before the test *:

  • No Fasting Required.
  • No other special preparations required.

Sample Required?

Specimen type: Serum (Blood Sample)

Specimen collection procedure:Venipuncture (Collection of blood from a vein, usually from the arm)

Understanding results of TB-PCR

Reference RangeInterpretation
Negative (IgG)No infection

‘*A Reference range is a set of values which helps the healthcare professional to interpret a medical test. It may vary with age, gender, and other factors. Reference ranges may also vary between labs, in value & units depending on instruments used and method of establishment of reference ranges'

References

  1. https://www.ncbi.nlm.nih.gov/pubmed/16977809
  2. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3401715/
  3. https://scdhec.gov/health/diseases-conditions/tuberculosis/tuberculosis-testing
  4. https://www.gov.uk/government/news/cattle-testing-positive-for-tb-to-be-dna-tagged