Test directory: C4a

Ordering Code 4145
Test Name C4a
Alias C4 anaphylatoxin
Preferred Specimen Plasma
Preferred Container EDTA, K2 (Lavender)
Optimum Volume 1 mL
Collection Instructions Collection only available at KAUAI 1, HILO 1, POB 3 DLS,
KONA 2 and QMC PB due to specimen transport requirements.
Handling Instructions Spin & Separate within 30 minutes of draw
Transfer the cell-free plasma to a clean tube and store immediately frozen on dry ice at -70 C or below.
Transport Requirements Ship on dry ice.
Specimen Stability Ambient: Not Stable
Refrigerated: Not Stable
Frozen: -70 degrees, 1 year
Rejection Criteria Thawed specimen
Avail. Stat NO
Analytic Time Up to 30 days
Methodology Radioimmunoassay (RIA)
Reference Lab  Quest Diagnostic Lab-NI

Reference range(s)

The reference ranges listed below are valid on this date of May 26, 2025.
Component Age Male Norm Male Critical Low Male Critical High Female Norm Female Critical High Female Critical Low Units Add'l info
C4a ALL 0-2830 0-2830 ng/mL