The Pune-based Serum Institute of India (SII) has urged the Union Health Ministry to allow in-house testing of its Cy-Tb injection for the detection of latent tuberculosis, saying the testing facility for this product is not available in any Government lab, official sources said on Wednesday. A letter in this regard was written by Prakash Kumar Singh, Director at SII. The Drugs Controller General of India (DCGI) approved market authorisation of Cy-Tb injection on May 9, 2022, but even after a year of approval, Cy-Tb is not available in the market due to the non-availability of testing facility in any Government lab, Singh wrote. Singh is also learnt to have mentioned that Cy-Tb is important for the detection of latent TB and the Government should allow it so that the injection can be made available in India and the world at large.