DNA Extraction with DNAzol and LAMP, Performed in a Heating Block as a Simple Procedure for Detection of Mycobacterium tuberculosis in Sputum Specimens

Methods Protoc. 2018 Oct 23;1(4):37. doi: 10.3390/mps1040037.


Tuberculosis (TB) remains as a major public health issue in developing countries. Accurate detection is essential for the proper management of patients with active disease. Here, we present a simple DNAzol-LAMP (loop-mediated isothermal amplification) procedure for the detection of Mycobacterium tuberculosis in sputum specimens. Twenty smear-positive sputum samples were analyzed as follows: (i) Genetic material was extracted by a standard DNAzol protocol, and (ii) mycobacterial DNA was detected by a typical TB-specific loop-mediated isothermal amplification method. Results and diagnostic test performance attests to the suitability of the proposed procedure.

Keywords: loop-mediated isothermal amplification; molecular detection; tuberculosis.