Osmotic Fragility, RBC
Centralized Core Laboratory:Hematology
Purple top (EDTA)
patient 4.0 mL (minimum 2.0 mL)
Normal control: 4.0 mL (minimum 2.0 mL)
Cause for rejection:
Sent to Reference Laboratory
Immediately place specimen on ice after draw.
Draw a control specimen at the same time from a normal, unrelated, non-smoking individual. Clearly write "normal control" on label.
For Outpatients, test should only be drawn in outpatient locations within a Hospital (Akron or Beeghly).
See patient report for Reference Values