| Table 1. IRS semi-quantitative scale. | |
| A | B |
|---|---|
| Score 0: No positive cells | Score 0: No color reaction |
| Score 1: Positive cells <10% | Score 1: Low color intensity |
| Score 2: Positive cells 11%-50% | Score 2: Medium color intensity |
| Score 3: Positive cells 51%-80% | Score 3: High color intensity |
| Score 4: Positive cells >80% | |
IRS=Immunoreactive score.