Pleural fluid lipid values in pseudochylothorax and cylothorax
| Feature | Pseudochylothorax | Chylothorax |
| Triglycerides | >1.24 mmol/l (110 mg/dl) | |
| Cholesterol | >5.18 mmol/l (200 mg/dl) | Usually low |
| Cholesterol crystals | Often present | Absent |
| Chylomicrons | Absent | Usually present |