Suspected tuberculosis (TB) is often raised when someone has persistent respiratory or systemic symptoms such as a prolonged cough, fever or unexplained weight loss. This page explains symptoms that commonly prompt evaluation, typical tests that may be used, and which specialists or services are usually involved. This is general information and not a diagnosis or treatment plan. If you have severe breathlessness, large-volume bloody sputum, or sudden deterioration, seek emergency care immediately.
Common signs and when to suspect
Signs that commonly prompt consideration of tuberculosis include a cough lasting several weeks (often more than 2–3 weeks), night sweats, unexplained fever, persistent fatigue and unintentional weight loss. Cough with blood-tinged sputum (hemoptysis) is particularly concerning. People with weakened immune systems (for example diabetes or those on immunosuppressive medication) may be at higher risk and warrant careful evaluation. Any combination of these features, or symptoms that do not resolve, should lead to medical assessment.
Typical diagnostic steps
Evaluation usually combines clinical assessment, chest imaging (chest X‑ray or CT) and microbiological tests. Commonly used investigations include sputum microscopy and culture, nucleic acid amplification tests (NAAT/PCR), and immunological tests such as the tuberculin skin test (TST) or interferon‑gamma release assays (IGRA). The choice and order of tests depend on symptoms, exposure history and local protocols; interpretation and follow‑up decisions are made by clinicians.
Transmission, prevention and public health measures
Tuberculosis spreads mainly by airborne droplets produced when an infectious person coughs, sneezes or speaks. Risk of transmission increases in crowded, poorly ventilated spaces. Key preventive measures include limiting close contact with someone suspected or known to be infectious, ensuring good ventilation, and practicing respiratory hygiene. Confirmed or suspected cases are also subject to public health procedures such as contact tracing and notification—local health authorities provide guidance on these steps.
Which specialist to consult and next steps
Primary care or family medicine is an appropriate first contact for initial assessment, basic tests and referral. Pulmonology (respiratory medicine) and Infectious Diseases and Clinical Microbiology services commonly manage diagnosis and follow‑up of TB. If TB is suspected, clinicians will arrange the needed imaging and microbiology and coordinate public health reporting and contacts. If you are immunocompromised or have severe findings, seek specialist assessment without delay.
Tanitedavi.com is a Bogazici Teknopark project.