AFB-Smear Examination by ZN Stain – Body Fluids

This test measures the presence of acid-fast bacilli (AFB) specific to Mycobacterium tuberculosis in different body fluids.

• To diagnose infection by tuberculosis • To monitor treatment effectiveness for tuberculosis • To identify other conditions caused by AFB bacteria • To assess the risk of developing tuberculosis

This test may be recommended if • You have symptoms of tuberculosis, such as cough, weight loss, fever, and night sweats. • You have been exposed to someone with active tuberculosis. • Your doctor suspects other conditions caused by AFB bacteria. • You need to monitor the effectiveness of tuberculosis treatment.

Abnormal, i.e., positive results may suggest a tuberculosis infection or other conditions caused by AFB bacteria.

• You will be required to provide a body fluid sample, such as pleural fluid, cerebrospinal fluid, or ascitic fluid. • The sample collection is a simple procedure and will be performed at the laboratory or a healthcare facility. • The sample will be stained using the Ziehl-Neelsen (ZN) stain and examined under a microscope to detect the presence of acid-fast bacilli.

Before the test: • Inform your doctor about any ongoing medications or medical conditions. • Ensure the specimen type, site, clinical history, and relevant information are properly mentioned on the test request form (TRF). • Follow any specific instructions provided by your doctor regarding fasting or other preparations. Please reach out to your healthcare provider for any specific requirements.

Other tests that may be ordered alongside AFB-Smear examination by ZN Stain for body fluids include: • Culture and Sensitivity testing to identify the specific type of bacteria causing infection and determine antibiotic susceptibility. • PCR tests to detect the genetic material of Mycobacterium tuberculosis, providing faster and more accurate results. • Chest X-ray or CT scan to evaluate lung involvement in tuberculosis cases.

Acid-Fast Bacillus Smear Examination by Ziehl-Neelsen Stain for body fluids

Tuberculosis (TB) is an infectious disease caused by Mycobacterium tuberculosis bacteria. It primarily affects the lungs but can also affect other parts of the body. Symptoms include persistent cough, weight loss, fever, night sweats, and fatigue.