Nasal Swab for Fungus Stain/Fungal Smear (KOH)

Specimen Required

Nasal Swab

Fasting Required

Purpose of the Test

A nasal swab for fungus stain/fungal smear is a laboratory test used to detect the presence of fungal organisms in the nasal passages. The test is used to diagnose and monitor fungal infections of the nasal passages, sinuses, and lungs.

When this test is required

A doctor may request this test when a patient has symptoms of a possible fungal infection of the nasal passages or sinuses, such as nasal congestion, headache, facial pain, and fever. The test may also be ordered if a patient has a compromised immune system or has been exposed to environmental factors that increase the risk of fungal infection.

What the Test Detects

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Preparation for the Test

No special preparation is usually required for this test. However, patients should inform their doctor if they are taking any medications that may affect the test results. In summary, milk for fungus stain/fungal smear is a laboratory test used to diagnos In summary, a nasal swab for fungus stain/fungal smear is a laboratory test used to diagnose and monitor fungal infections of the nasal passages, sinuses, and lungs. The test is requested when a patient has symptoms of a possible fungal infection of the nasal passages or sinuses, or when there is a risk of fungal infection due to a compromised immune system or environmental factors. The test requires a nasal swab collected using a sterile swab, and no special preparation is usually required.

Sample Requirements

During the test, a swab is inserted into the patient’s nostril and gently rotated to collect a sample of mucus and other material from the nasal passage. The sample is then treated with potassium hydroxide (KOH) to dissolve non-fungal material, such as cells and debris. The remaining fungal organisms are then viewed under a microscope after staining with a special fluid for fungus stain.

Additional Notes

It is important to note that the nasal swab for fungus stain/fungal smear is just one tool in the diagnosis of fungal infections of the nasal passages, sinuses, and lungs, and it should be used in conjunction with other diagnostic tests and clinical evaluation by a doctor. False negative and false positive results can occur, so the test results should be interpreted in the context of other diagnostic tests and clinical findings.

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