Minimum Specimen Volumes - Purple Top
PURPLE TOP (EDTA)
Test Name
(Most commonly ordered tests)
Adults
(full Size Tubes)
Neonates
(Microtainers)
Pediatrics
(Pedi Tubes)
Hemoprofile only 2 mL 0.3 mL 1.5 mL
Hemoprofile and Differential 2 mL 0.3 mL 1.5 mL
Hemoprofile, Diff, and Platelet Count 2 mL 0.3 mL 1.5 mL
Hgb and Hct 2 mL 0.3 mL 1.5 mL
Reticulocyte Count 2 mL 0.3 mL 1.5 mL
Sed Rate (ESR) *Must use glass tube 4.5 mL N/A 3.5 mL
Sickle Cell Screen 2 mL 0.3 mL 1.5 mL
Renin Level (on ice) 5 mL 2.2 mL 3 mL

HTML Author: Pagogh Cho
Last Updated: 4/27/95