| Variable | Frequency | % | |
| Alkaline phosphatase | Normal | 15 | 21.1% |
| Above normal | 56 | 78.9% | |
| Alanine transferase | Normal | 29 | 40.8% |
| Above normal | 42 | 59.2% | |
| TSB | Normal | 14 | 19.7% |
| Above normal | 57 | 80.3% | |