Modified Centor (McIsaac) Score
Total score
3
Probability: 28-35%
Consider rapid strep testing and/or culture.
Breakdown
| Age | +1 | Age 3-14 years |
| Exudate | +0 | Not present |
| Ant cervical nodes | +0 | Not present |
| Fever >38 | +1 | Temperature >38C / 100.4F |
| Cough absent | +1 | Cough absent |
Interpretation table
| Score | Probability | Recommendation |
|---|---|---|
| 0 | 1-2.5% | No further testing or antibiotics. |
| 1 | 5-10% | No further testing or antibiotics. |
| 2 | 11-17% | Optional rapid strep testing and/or culture. |
| 3 | 28-35% | Consider rapid strep testing and/or culture. |
| ≥4 | 51-53% | Consider rapid strep testing and/or culture. Empiric antibiotics may be appropriate depending on the specific scenario. |