Special Communication
July 2023: Changes to COMAP, DRGTOF, MECDRG, TAPENU, and UASFR Testing
All changes effective August 21, 2023.
Changes to Specimen Requirements
Complement, Alternate Pathway (AH50), Functional (COMAP)
Specimen Type
Serum
Volume
1 mL
Minimum Volume
0.3 mL
Collection Container
Red Serum (Plain) Tube
Transport Temperature
Frozen, Critical (-70°C)
Specimen Instructions/Other Information
Locations without a -70°C freezer should not collect this test.
Do not use gel separator tubes.
Allow specimen to clot for 1 hour at room temperature. Centrifuge (at refrigerated temperature if possible) and separate serum from cells ASAP or within 2 hours of collection. Transfer into standard aliquot tube and freeze immediately in a -70°C freezer.
Separate specimens must be submitted when multiple tests are ordered.
Unacceptable conditions include specimen types other than serum, specimens left to clot at refrigerated temperature, specimens exposed to repeated freeze/thaw cycles, or specimens that are grossly hemolyzed, lipemic, or icteric.