PennHIP and OFA Certification
If you are considering using your dog as a breeding animal, you may be interested in having your pet certified to be free of hip and elbow dysplasia.
Quick Comparison
| PennHIP | OFA | |
| Veterinarian certification required? | Yes | No |
| Earliest age of evaluation (for certified results) | 16 weeks | 2 years |
| Radiographs required | 3 | 1 |
| Scoring system | Quantitative: Calculated Distraction Index 0–1 (0 is the best) evaluated by trained veterinarian |
Qualitative: 7-point system from excellent to severe, based on evaluation of three independent radiologists |
| Recognized by AKC | No | Yes |