The Mississippi Delta Cardiovascular Health Examination Survey: Study Design and Methods

Table 5

Mississippi Delta Cardiovascular Health Examination Survey specimen collection and processing.

Tube number	Tube type	Spin time (minutes)	Transfer	Ship	Ship temperature	Laboratory	Test
1	SST Gold top; (5 mL)	15	None	Serum	Ambient	MPHL	Lipid profile
2	EDTA Lavender top; (4 mL)	15	Plasma to 1 transfer tube	Plasma	Cold	LabCorp	Homocysteine
3 and 4	EDTA Lavender top; (4 mL)	No spin	None	Whole blood	Cold	LabCorp	Hemoglobin A1c; complete blood count
5	Red top; (10 mL)	15	Serum to 2 transfer tubes	Serum	Cold	LabCorp	Insulin; nicotine and metabolite
6	SST red/gray top; (8.5 mL)	15	None	Serum	Cold	LabCorp	Metabolic panel; high sensitivity CRP

CRP: C-reactive protein; MPHL: Mississippi Public Health Laboratory; SST: Serum Separator Tube.