Table 4a.

Neutrophilic and mononuclear cell markers of activation

	NGAL (µg/l) Median (range)	NGAL/C Median (range)	STNFr1 (µg/l) Median (range)	STNFr1/C Median (range)
Vasc-pat	160 (54–620)	110 (42–340)	2·9 (0·9–23·9)	1·6 (0·5–6·1)
DC	180 (66–870)	120 (57–260)	2·1 (0·9–5·0)	1·2 (0·6–2·6)
HBD	54 (34–176)	81 (38–130)	1·1 (0·8–2·1)	1·6 (0·8–2·3)

Vasc-pat = all vasculitis patients. DC = disease controls, HBD = healthy blood donors. NGAL/C = NGAL divided by cystatin C. sTNFr1/C = sTNFr1 divided by cystatin C.