Table 1.

Calcitonin assays performances

Assay	Format	Sample volume	Pretreatment	Within-run CV	Between-run CV	Measuring range	LLD
Cis-bio	RIA	200µl	30 min 56°C	6.7% at 10.9 ng/L	5.2% at 21.1 ng/L	1.5 –1530 ng/L	1.5 ng/L
Diasorin	Automated chemi-luminescent	150µl	NO	2. 5% at 25 ng/L 3.1% at 160 ng/L	5% at 25 ng/L 4.7% at 160 ng/L	1.0 – 2000 ng/L	4 ng/L
Siemens	Automated chemi-luminescent	200 µl	NO	3.4% at 29 ng/L 2.3% at 200 ng/L	4.2% at 29 ng/L 5.5% at 260 g/L	2.0 – 2000 ng/L	2 ng/L
IBL	ELISA	100 µl	NO	2.8% at 37 ng/L 2.4% at 260 ng/L	8.6% at 41 ng/L 6.3% at 167 ng/L	1.3 – 790 ng/L	1.3 ng/L
DSL	IRMA	150 µL	NO	2.4% at 27 ng/L 5.1% at 390 ng/L	9.0% at 24.3 ng/L 7.8% at 391 ng/L	5 – 500 ng/L	5 ng/L