Test Code LAB4136 LIPASE
Specimen Type
Preferred Sample: Lithium Heparin Plasma (Mint Green Top, Dark Green)
Alternate Sample: Serum Tube (SST, Gold, Corvac, Tiger, Red Top Tube)
Specimen Volume
1 mL
Minimum Volume
0.5 mL
Turnaround Time
STAT: 1 hour
Routine: 4 hours
Test Schedule
Daily
Sample Stability
Room Temperature: 7days
Refrigerated: 7 days
Frozen: 12 months
Method
Colorimetric
Reference Ranges
Lipase: </= 64 U/L
CPT Codes
83690
Test Components
Lipase, U/L.
Clinical Information
Lipases are enzymes that hydrolyze glycerol esters of long-chain fatty acids. Pancreatic lipase is a glycoprotein that is synthesized and stored in the pancreas. Other lipases, including lipoprotein lipase, may be included in the measurement of lipase activity, but pancreatic lipase is the predominant form in blood. Pancreatic lipase is released upon pancreatic cell death and is an important marker in the diagnosis and the therapeutic monitoring of pancreatic diseases. Pancreatic lipase is used in the diagnosis and management of acute and chronic pancreatitis, as well as pancreatic duct obstruction.
Serum lipase is known to be a better first-line test than serum amylase in the diagnosis of acute pancreatitis due to its sensitivity and specificity, as well as its longer half-life than amylase. Abdominal pain is often difficult to diagnose by physicians. One of the differential diagnoses of abdominal pain is acute pancreatitis. Serum pancreatic lipase determination, along with clinical presentation and imaging, can aid in the diagnosis of pancreatic disease.
Heparin administration can result in elevated lipoprotein lipase activity, which is detected by the Lipase assay.