IMMUNOHISTOCHEMISTRY, MELANOSOME

What this test checks

Detects melanocyte markers in tissue to confirm that a tumour is a melanoma (skin cancer arising from pigment-producing cells) and distinguish it from other tumours.

Why do people get this test?

Accurately identifying melanoma is essential because its treatment differs completely from other skin cancers. This test confirms the diagnosis so the right treatment can begin.

When you should consider this test

• When a pigmented skin lesion or tumour is suspected to be melanoma
• When classifying an undifferentiated tumour that might be melanoma
• As part of a melanoma diagnostic panel

How to prepare

No preparation needed — performed on biopsy or surgical tissue.