Table 2.

Laboratory tests used in the diagnosis of chyle leak.

Laboratory test	Cutoff
Triglycerides	>110 mg/dL (1.24 mmol/L) – Diagnostic 50–110 mg/dL – Check for presence of chylomicrons
<50 mg/dL (0.56 mm/L)—Rules out (unless fasting)
Protein	20–30 gm/L
Cell Count	>80% Lymphocytes
Lipoprotein electrophoresis	Presence of chylomicrons
Cholesterol	<200 mg/dL (5.18 mmol/L)
pH	7.40–7.80