Nail for Fungus C/S with Fungus Stain (KOH)

Specimen Required

NAIL

Fasting Required

Purpose of the Test

The Nail for Fungus C/S with Fungus Stain (KOH) test is performed to detect the presence of a fungal infection in the nail. It is usually ordered when a person has signs and symptoms of a fungal nail infection, such as thickening, discoloration, and deformity of the nail.

When this test is required

A healthcare provider may order this test when a person has the following symptoms: Thickening or discoloration of the nail , Deformity of the nail , Foul odor from the nail ,

What the Test Detects

Culture involves growing the nail sample in a laboratory setting to identify the specific type of fungus responsible for the infection. The staining process involves using a potassium hydroxide (KOH) solution and a fungal stain to examine the nail sample under a microscope, allowing the lab technician to visualize the fungal elements in the sample.

Preparation for the Test

No special preparation is required for this test, but it is important to inform your healthcare provider if you are taking any medications or have any medical conditions that may affect the results.

Sample Requirements

To perform the test, a sample of the affected nail is collected, usually by scraping the nail surface or clipping a small piece of the nail. The sample is then examined under a microscope after applying a potassium hydroxide (KOH) solution and a fungal stain.

Additional Notes

It is important to note that the test results may take several weeks to obtain as the culture requires time to grow. False-negative results are also possible if the nail sample is not properly collected or if the fungal infection is limited to a small area of the nail.

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