Breast PD-L1 22C3 (Prior to Pembrolizumab Therapy)

General Information

Turnaround Time: 5-7 working days

What to send:

  • Paraffin block from tumour biopsy or resection (cytology samples are not suitable for this test).
  • Unstained slides for 22C3 testing should be cut at 4um and mounted on Agilent FLEX slides.
  • A copy of the original Pathology report where possible.

Notes

Please note tissue handling, tissue fixation, time between cutting and staining and excessive drying can lead to loss of expression. Fixatives containing alcohol should not be used and use of Bouin’s fixative will preclude testing by FISH methods.

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