Table 1

Reference ranges for serological assays

C4 (g/l)C1 inhibitor (g/l)Functional C1 inhibitor (% mean normal)
BRI, Bristol Royal Infirmary; SMH, Southmead Hospital.
SMH0.15–0.500.15–0.3570–130
BRI0.17–0.650.15–0.3570–130