PR positive biopsy and negative after mammaprint test

Konakona
Konakona Member Posts: 173
edited February 2016 in Waiting for Test Results

I just got my results back, high risk Luminal B, I was ER+PR+ at biopsy and now according to the mammaprint test I am ER-PR+, How this can be? At biopsy I was 90% ER positive, 30%PR positiv

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