Table 1 A450 levels of 1:400 diluted plasma and synovial fluid samples in cF16.1‐anti fibrinogen sandwich ELISA.

Sample	Fibrinogen	cFBG*	A450
	(mg/l)	(μg/ml)
RASF1	504	2.9	−0.02
RASF3	950	8.7	0.15
RASF4	558	15.2	0.23
RASF6	162	<0.4	−0.04
OASF4	93	<0.4	−0.03
Normal plasma	1800	<0.4	−0.04
RA plasma 18	3780	<0.4	0.04
RA plasma 19	3200	<0.4	0.04

*cFBG levels were obtained from the results of the cF16.1‐AMC sandwich ELISA.