SPECIMEN
CENTRIFUGE FOR PLASMA
DEPARTMENT
CHEMISTRY
COMMON TESTS
STAT CHEMISTRY TESTS
SOME SPECIFIC TESTS REQUIRE PLASMA.
EXAMPLES: AMMONIA, USUALLY ELECTROLYTES.
REASON FOR ORDER
Can affect serum specimens, so collect after serum.
Affects coagulation tests.
HOW IT WORKS
Lithium Heparin.
Heparin inhibits thrombin.
Gel separator forms a physical barrier between cells and plasma to stop metabolizing substances such as glucose.