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AFB Stain, Urine

Also known as AFB Urine, Acid-Fast Bacilli (AFB) urine test

₹419~~₹460~~ 8% Off

You need to provide

Urine

This test is for

Male, Female

Earliest reports in

24 hours

Test Preparation

The urine sample must preferably be the first-morning midstream urine (part of urine that comes after the first and before the last stream). Collect the urine sample in a sealed and sterile screw-capped container provided by our sample collection professional. Ensure that the urethral area (from where the urine is passed) is clean & the container doesn't come in contact with your skin. Women are advised not to give the sample during the menstrual period unless prescribed.

Understanding AFB Stain, Urine

What is AFB Stain, Urine?

The AFB Stain, Urine test is used to identify the presence of Mycobacterium species, particularly Mycobacterium tuberculosis, the causative organism of tuberculosis (TB). This test involves staining urine samples to identify acid-fast bacilli under a microscope. It helps diagnose active genitourinary tuberculosis (GUTB), a form of extrapulmonary tuberculosis, and distinguish them from other urinary tract infections.

The AFB Stain, Urine test is used to detect the presence of acid-fast bacilli (AFB) in urine. It primarily aims to identify Mycobacterium tuberculosis, the bacterium responsible for tuberculosis (TB). Mycobacterium tuberculosis has a unique waxy cell wall that makes it resistant to conventional staining methods. However, it retains its color when subjected to special acid-fast staining. This property allows the bacteria to be visible under a microscope. Thus, AFB Stain, Urine test serves as an important test for the diagnosis of genitourinary tuberculosis (GUTB), that is, TB infection in the kidneys, bladder, and any other areas of the genitourinary system.

The AFB Stain, Urine test is recommended for individuals with symptoms suggestive of urinary tract infections like frequent urination, pain during urination, blood in the urine, or persistent fever, especially if there’s concern about extrapulmonary tuberculosis (TB). This test is also important for diagnosing TB in individuals who may not have typical lung symptoms but are at risk, such as those with weakened immune systems or those who have been in close contact with someone with known TB infections. Early detection through AFB Stain, Urine helps ensure the appropriate treatment and prevents complications.

Drink enough water to be able to submit a urine sample. You must submit the first-morning midstream urine (part of urine that comes after the first and before the last stream) sample in a sealed and sterile screw-capped container provided by the sample collection professional. Women are advised not to give the sample during the menstrual period unless prescribed. Inform the doctor about all the medications or supplements being taken, as these may affect the test results, potentially requiring adjustments or temporary discontinuation before the test.

Test result ranges are approximate and may differ slightly between labs depending on the methodology and laboratory guidelines. It is important to discuss the test results with the doctor, who will consider other factors such as the medical history, symptoms, underlying medical conditions, and additional test results to establish a diagnosis of TB disease accurately.

What is AFB Stain, Urine used for?

The AFB Stain, Urine test is done:

To detect the presence of Mycobacterium tuberculosis in urine samples from individuals with suspected genitourinary tuberculosis (GUTB).
To confirm or rule out the diagnosis of genitourinary tuberculosis in individuals presenting with urinary symptoms such as blood in urine, frequent urination, and pain during urination.
To aid in diagnosing extrapulmonary TB, especially in individuals with known pulmonary tuberculosis or those at high risk for TB reactivation.
To monitor the effectiveness of treatment in patients diagnosed with GUTB.

What does AFB Stain, Urine measure?

The AFB Stain, Urine test detects the presence of acid-fast bacilli (AFB) in urine, primarily targeting genitourinary tuberculosis, which affects the urinary tract and genital organs. The process involves staining the urine sample with a special dye that binds to the waxy cell wall of Mycobacterium tuberculosis. After staining, the sample undergoes acid-alcohol decolorization. Only acid-fast bacilli retain the color, making them visible under a microscope.

A positive result means Mycobacterium tuberculosis or other mycobacteria are present, suggesting an active genitourinary tuberculosis (TB) infection. This usually leads to further tests, like urine cultures, to confirm TB and check if the bacteria are resistant to certain drugs.

A negative result doesn’t rule out TB, especially if symptoms continue. In such cases, more tests, like imaging or a biopsy, may be needed for a clear diagnosis. The test can also detect other mycobacteria, which cause similar symptoms but need different treatments. So, the AFB Stain, Urine test is important for diagnosing genitourinary TB and helping guide treatment.

Answers to Patient Concerns & Frequently Asked Questions (FAQs) about AFB Stain, Urine

Frequently Asked Questions about AFB Stain, Urine

Q. What is the AFB Stain, Urine test?

The AFB Stain, Urine test is used to detect acid-fast bacilli (AFB) in urine, specifically Mycobacterium tuberculosis, the bacteria that cause tuberculosis (TB). It helps diagnose genitourinary tuberculosis (GUTB), a type of TB affecting the kidneys, bladder, and urinary system.

Q. Why is the AFB Stain, Urine test done?

This test is done to check for Mycobacterium tuberculosis or other mycobacterial infections in the urine. It's usually done when a doctor suspects genitourinary tuberculosis (GUTB) when there are symptoms like blood in the urine, frequent urination, lower back pain, fever, or exposure to TB. The test helps confirm or rule out active TB in the urinary system.

Q. How is the AFB Stain, Urine test performed?

For this test, a urine sample, usually collected in the morning, is stained with a special dye that binds to the bacteria’s cell walls. After the sample is treated with an acid-alcohol solution, any remaining bacteria that are "acid-fast" retain the color, allowing them to be seen under a microscope.

Q. What do the results mean?

A positive result means acid-fast bacilli is present in the urine, suggesting genitourinary tuberculosis or a similar infection. A negative result means no bacteria is found, but it doesn't completely rule out genitourinary tuberculosis, especially if symptoms continue. Additional testing may be needed for a final diagnosis.

Q. What other tests may be ordered with the AFB Stain, Urine test?

Other tests may include a urine culture to identify the bacteria, a PCR test to find TB DNA, and imaging tests like CT scans or chest X-rays to check for lung involvement due to TB.

Q. What is genitourinary tuberculosis (GUTB)?

Genitourinary tuberculosis (GUTB) is a form of TB where Mycobacterium tuberculosis infects parts of the urinary system, such as the kidneys, bladder, and reproductive organs. It usually occurs when TB spreads from the lungs to other parts of the body.

Q. Who is at risk for genitourinary tuberculosis?

Individuals at higher risk for GUTB include: 1) People with a history of pulmonary tuberculosis or exposure to TB. 2) Individuals with weakened immune systems (e.g., HIV-positive individuals, people with diabetes, or those undergoing immunosuppressive treatment). 3) People living in areas with high tuberculosis prevalence. 4) Those who have had previous urinary tract infections or kidney disease.

Q. Is GUTB contagious?

While GUTB itself is not directly contagious, Mycobacterium tuberculosis can spread to others when it affects the lungs and is active there. People with GUTB who have active pulmonary TB can still transmit the bacteria to others through coughing or sneezing.

Q. How is GUTB different from other urinary tract infections (UTIs)?

Unlike common UTIs caused by bacteria like E. coli, GUTB is caused by Mycobacterium tuberculosis and requires a different treatment approach. GUTB is often more difficult to diagnose, as it shares symptoms with other urinary tract issues. A TB test is necessary to confirm its presence.

Q. How does Tata 1mg ensure accurate lab test results?

Tata 1mg ensures accurate lab test results through certified laboratories that use advanced technology and adhere to stringent quality control measures. This commitment to high standards guarantees reliable results.

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