Three specimens total: One 4 mL lavender top tube (EDTA), one 6 mL pink top tube (EDTA), and one 7.5 mL serum separator tube (SST) or one 5 mL red top tube.
Allow 7.5 mL SST or 5 mL red top tube to clot, centrifuge and separate serum from cells immediately. Do not centrifuge or separate 6 mL pink top tube. Refrigerate and transport specimens within 24 hours of collection. Print patient’s full name and birthdate on tube. Do not cover original label if it contains handwritten information.
4 mL EDTA whole blood, 2 mL serum, and 6 mL whole blood collected in 6 mL pink top tube.
1 mL EDTA whole blood, 0.75 mL serum, and 3 mL whole blood collected in 6 mL pink top tube.
WBC and platelet count may decline after 24 hours; 48 hours maximum delay.
Gross hemolysis; clotting of lavender top tube; incorrect or incomplete labeling; discrepancy between requisition and specimen label.