SPECIMEN
CLOT FOR 30 MINUTES & CENTRIFUGE FOR SERUM
DEPARTMENT
CHEMISTRY
COMMON TESTS
ROUTINE CHEMISTRY TESTS. SOME
SPECIFIC TESTS REQUIRE SERUM.
EXAMPLES: UREA, B12, BILIRUBIN.
REASON FOR ORDER
After coagulation tubes so it does not affect coagulation test results.
HOW IT WORKS
Silica speeds up clotting by activating platelets.
Gel separator forms a physical barrier between cells and serum to stop metabolizing substances such as glucose.
Blood will clot without mixing, but if tube is not mixed, silica particles can stay in serum and affect testing.
Gel separator can affect some tests, like drug testing.
