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Microbiology Fever & Infection Home collection available

TB DNA PCR

Parameters1 tested
SampleBlood
FastingNot required
Report in2-3 days

How to prepare

No fasting needed

You can eat and drink normally before the test.

Good to know

No special preparation needed.

Medicines

Tell our phlebotomist about any medicines you take. Don't stop them without asking your doctor.

Comfortable clothes

Wear a loose sleeve so the sample can be taken easily from your arm.

How it works

Book onlinePick a time slot
Home visitSealed, sterile kit
Lab testingBarcode tracked
ReportIn 2-3 days

About this test

TB DNA PCR looks for the genetic material (DNA) of Mycobacterium tuberculosis, the germ that causes TB. Because it copies and detects tiny amounts of DNA, it can find TB faster than culture, often within a day or two.

Why is this test done?

  • Confirm suspected tuberculosis quickly
  • Test samples where few germs are present
  • Help diagnose TB outside the lungs
  • Support the doctor before starting TB treatment

Symptoms — when should you get tested?

  • Cough for more than 2 weeks
  • Evening fever and night sweats
  • Weight loss and loss of appetite
  • Swollen glands in the neck
  • Coughing up blood

Normal range

M. tuberculosis DNA Not detected

Reference ranges differ slightly between labs, methods, age and sex. Always discuss your report with your doctor.

If your result is high

A "Detected" result means TB germ DNA was found in the sample, which strongly supports active TB. Your doctor will decide treatment along with other findings.

Common reasons
  • Active tuberculosis (lungs, glands, bones or other organs)

How is the test done?

  1. 1
    Book online

    Choose your slot for home collection or a visit to our centre.

  2. 2
    Blood sample taken

    A trained phlebotomist takes a small blood sample from a vein in your arm with a sealed, single-use needle. It takes about 2 minutes.

  3. 3
    Tested in our lab

    Your barcoded sample is tested on automated machines with strict quality checks.

  4. 4
    Report on WhatsApp

    A pathologist checks the result and the report reaches you on WhatsApp and email.

Frequently asked questions

Not fully. If very few germs are in the sample the test can miss them, so your doctor may advise culture or other tests.

No fasting is needed for this test. You can eat and drink normally.

Your report is usually ready in 2-3 days after the sample reaches our lab. We send it on WhatsApp and email, and you can also download it from the Reports page.

Please call our team to confirm whether home sample collection is available for your location and test.

This test needs a blood sample. No special preparation needed.

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