Table 2. Instrument-specific relative units (RU) for CFX96^TM (BIO-RAD^®) and the corresponding IHC equivalents.

RU	ERBB2			ESR1			PGR			MKI67
	Negative	Equivocal	Positive	Negative	Low Positive	High Positive	Negative	Low Positive	High Positive	Low	High
MammaTyper	< -0.7	≥ -0.7 < 0	≥ 0	< 0	≥ 0 < 1.1	≥ 1.1	< 0	≥ 0 < 0.5	≥ 0.5	< 0	≥ 0
IHC equivalent	0 / 1+	2+	3+	0	1–49%	≥50%	0	1–19%	≥20%	<20%	≥20%