Table 2.
Diagnostic Criteria for HELLP Syndrome
| Tennessee Classification | Mississippi Classification |
|---|---|
| Complete syndrome: | Class 1: platelets ≤ 50 × 109/L |
| Platelets ≤ 100 × 109/L | 1. AST or ALT ≥ 70 units/L |
| AST ≥ 70 units/L | 2. LDH ≥ 600 units/L |
| LDH ≥ 600 units/L | |
| Incomplete syndrome: | |
| Any one or two of the above | |
| Class 2: platelets ≤ 100 × 109/L | |
| 1. ≥ 50 × 109/L | |
| 2. AST or ALT ≥ 70 units/L | |
| 3. LDH ≥ 600 units/L | |
| Class 3: platelets ≤ 150 × 109/L | |
| 1. ≥ 100 × 109/L | |
| 2. AST or ALT ≥ 40 units/L | |
| 3. LDH ≥ 600 units/L |
Abbreviations: ALT, alanine aminotransferase; AST, aspartate aminotransferase.