Yes. Any cough lasting more than 3 weeks in Delhi should be investigated for TB — and at Pulmovista Clinics, I consider TB investigation for any cough beyond 2 weeks in a patient with other risk factors (weight loss, night sweats, TB contact, immunocompromise). The test is simple — a sputum sample for GeneXpert MTB/RIF provides a result within hours. A chest X-ray is also essential. Please do not wait for a haemoptysis or weight loss to seek TB investigation — early diagnosis produces far better outcomes and prevents transmission.