Idexx Catalyst One, Руководство оператора

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Complementary Tests
Lipase and amylase are usually determined in conjunction with tests of hepatic and pancreatic
function or damage. Canine and feline pancreas-specific lipase tests should be performed in
questionable cases.
Reaction Sequence
Magnesium (Mg)
Magnesium plays an important intracellular role in the activation of enzymes including those
responsible for many anabolic and catabolic processes. It is also involved in the formation
and destruction of acetylcholine, which governs the transmission of electrical impulses at the
neuromuscular junction. The adrenal, thyroid, and parathyroid glands appear to regulate serum
magnesium concentration.
Principal Reason for Performing the Test
The importance of measuring serum magnesium concentration in dogs and cats has not been fully
investigated. However, there have been reports of hypomagnesemia in dogs following the removal
of the parathyroid gland.
Most Common Abnormalities Indicated by the Test
Increased magnesium—decreased glomerular filtration.
Decreased magnesium —parathyroid gland removal.
Sample Type and Precautions
Blood samples should be centrifuged immediately after collection as magnesium is released from
hemolyzed erythrocytes and can give erroneously high magnesium results. Remove plasma or
serum promptly from the cells or clot. If plasma is being collected, use only lithium heparinized
samples. Do not use oxalate/citrate or EDTA as anticoagulants. Blood collection tubes preserved
with sodium fluoride cause lower results.
Complementary Tests
See tests listed under Endocrine Profile in the “Profile Selection” table on page 54.
Appendices