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Measures

Number of red blood cells in the blood

Identifies

Red blood cell disorders

Measures: Number of red blood cells in the blood

Identifies: Red blood cell disorders

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What is the maximum days the report can be obtained for the test

The maximum days the report can be obtained for the Acid Fast Bacilli (AFB) Test with 3 samples is 14 days.

What are the prerequisites for the test Acid Fast Bacilli (AFB) Test (3 Samples)

  • Three sputum samples collected on different days
  • Properly labeled containers for each sample
  • Patient's demographic information
  • Requisition form with physician's order

What are the measure values for the test Acid Fast Bacilli (AFB) Test (3 Samples)

Sample Measure Value
Sample 1 Positive
Sample 2 Negative
Sample 3 Positive

What does this test Acid Fast Bacilli (AFB) Test (3 Samples) identify?

Acid Fast Bacilli (AFB) Test (3 Samples)

The Acid Fast Bacilli (AFB) Test is a laboratory test that is used to identify the presence of acid-fast bacilli in a patient's samples. Acid-fast bacilli are a type of bacteria that have a waxy cell wall which makes them resistant to standard bacterial staining techniques. This test is commonly used to diagnose tuberculosis, as the bacteria that cause tuberculosis are acid-fast bacilli.

The test involves taking three samples from the patient, usually sputum samples, and staining them with a special dye called Ziehl-Neelsen stain. This stain binds to the waxy cell wall of acid-fast bacilli, causing them to appear red or pink under a microscope. If acid-fast bacilli are present in the samples, they will be visible under the microscope, indicating a positive result for tuberculosis.

In addition to diagnosing tuberculosis, the AFB Test can also be used to diagnose other infections caused by acid-fast bacilli, such as leprosy and certain types of nontuberculous mycobacterial infections.

Why is this test Acid Fast Bacilli (AFB) Test (3 Samples) taken?

The Acid Fast Bacilli (AFB) Test is taken to diagnose tuberculosis (TB) and other infections caused by acid-fast bacteria, such as Mycobacterium avium complex (MAC) and Mycobacterium kansasii. Acid-fast bacteria have a unique cell wall structure that makes them resistant to standard laboratory stains, so a special staining technique is used to identify them.

The test involves collecting three samples, typically sputum samples, from the patient over a period of time to increase the likelihood of detecting the bacteria if present. The samples are then processed and stained using the Ziehl-Neelsen or Kinyoun method, which allows the acid-fast bacteria to retain the stain even after being treated with acid-alcohol solution.

If acid-fast bacilli are observed under a microscope in any of the samples, it indicates a positive result for TB or other acid-fast bacterial infections. Further testing, such as culture and drug susceptibility testing, may be done to confirm the diagnosis and determine the most effective treatment.

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