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Paediatric Laboratory Medicine

Chylomicrons in Fluids - ChyloThorax Investigation

Clinical Significance

Chylothorax refers to the presence of lymphatic fluid in the pleural space secondary to leakage from the thoracic duct or one of its main tributaries. A tear or leak in the thoracic duct causes collection of chylous fluid in the pleural cavity, which can cause acute or chronic alterations in the pulmonary mechanics.

Test Name

Chylomicrons in Fluids - ChyloThorax Investigation

Test Code



Biochemistry - Biochemistry



Turn Around Time


Specimen Type

Fluid samples (e.g., pleural, peritoneal, chest drainage)

Minimum Specimen Requirements

300 uL


Send cold with ice packs

Approval is not required

Shipping and Contact Information

The Hospital for Sick Children
Rapid Response Laboratory
170 Elizabeth Street, Room 3642
Toronto, ON
M5G 2G3
Phone: 416-813-7200
Phone: 1-855-381-3212

Reference Range

Present or Not Present