Tuberculosis (TB)

Policy statement: Liquid media for culture and DST

The use of liquid medium for culture and DST, 2007

WHO recommends, as a step-wise approach:

  • the use of liquid medium for culture and DST in middle- and low-income countries;
  • the rapid species identification to address the needs for culture and drug susceptibility testing (DST).

Taking into consideration that liquid systems will be implemented in a phased manner, integrated into a country specific comprehensive plan for laboratory capacity strengthening and addressing the following key issues:

  • appropriate biosafety level;
  • detailed customer plan describing guarantees and commitments of the manufacturer;
  • appropriate training of staff;
  • maintenance of infrastructure and equipment in laboratories;
  • quick transportation of samples from the peripheral to the culture laboratory;
  • rapid communication of results.