Centralized Core Laboratory:Hematology
Red Top (no anticoagulant) tube
2.5 mL (minimum 0.5 mL)
Sent to Reference Laboratory
Enzyme-Linked Immunosorbent Assay (ELISA).
Immediately after drawing the specimen, place the tube on wet ice.
Spin down and separate serum from clot
Immediately freeze specimen.
For Outpatients, test should only be drawn in outpatient locations within a Hospital (Akron or Beeghly).
> or = 46% normal
Complement, Alternate Pathway (AH50), Functional