COMPREHENSIVE IMMUNOHISTOCHEMISTRY EXTENDED PANEL

What this test checks

An extensive panel of immunohistochemistry markers designed to thoroughly characterise a complex or undifferentiated tumour — used when standard panels are insufficient to establish a definitive diagnosis.

Why do people get this test?

Some tumours are so unusual or undifferentiated that standard marker panels cannot classify them. A comprehensive extended panel casts a wider net to establish the diagnosis, which is essential before any treatment can begin.

When you should consider this test

• When a tumour cannot be classified with standard IHC panels
• When a cancer of completely unknown primary requires exhaustive marker testing
• For rare or undifferentiated tumours requiring specialist-level investigation

How to prepare

No preparation needed — performed on biopsy or surgical tissue.