Table 11. Analysis of reference material Seronorm™ Trace Elements Serum L-1, cat. 201405 using ICP-OES.

Bioelement	Seronorm™ Trace Elements Serum L-1 Certified [mg/l]	Seronorm™ Trace Elements Serum L-1 Measured [mg/l]	Recovery (%)
Ca 315.887	96.00	94.98	98.94
P 178.284	65.00	69.41	106.78
Na 589.592	2998.00	3105.12	103.57
K 766.490	126.00	130.09	103.25
Fe 239.562	1.43	1.38	96.50
Mg 285.213	20.60	22.49	109.17
Cu 224.700	1.88	1.67	89.89