. Author manuscript; available in PMC: 2015 Jul 1.

Published in final edited form as: Biol Trace Elem Res. 2014 Jun 11;160(1):132–142. doi: 10.1007/s12011-014-0033-5

Table 5.

Whole Blood Interday Analysis Results (ng element/mL sample)

Sample	Average	Ca^a	K^a	Mg^a	Na^a	Cr	Mn	Fe^a	Co	Cu	Zn	Se	Mo
1	Day 1	60.1	1720	28.7	1590	ND^b	15.6	500	0.507	950	7627	211	ND
	Day 2	59.8	1790	30.2	1730	2.33	18.2	491	0.543	953	8372	211	2.38
	Day 3	62.1	1650	28.5	1710	ND	12.4	493	0.523	976	8828	225	1.63

	Average	60.7	1720	29.1	1677	2.33	15.4	495	0.525	959	8276	216	2.01
	%RSD	1.69	3.31	2.55	3.69	NA	15.4	0.805	4.88	1.22	5.98	3.07	26.7

2	Day 1	66.1	2010	35.8	1530	1.70	27.8	494	0.700	1022	6493	204	1.09
	Day 2	58.6	2040	35.1	1580	1.41	61.3	476	0.823	1060	6574	204	1.74
	Day 3	61.3	1840	33.4	1460	ND	48.3	476	0.669	1010	6676	215	1.30

	Average	62.0	1963	34.7	1523	1.56	38.0	482	0.761	1031	6581	208	1.52
	%RSD	4.99	4.49	2.86	3.22	13.1	44.4	1.77	11.4	2.08	1.14	2.56	20.7

3	Day 1	65.9	1860	40.8	1680	ND	16.8	511	0.567	1039	5945	163	1.29
	Day 2	58.2	1850	39.0	1590	0.491	15.7	474	0.410	1005	6419	169	1.78
	Day 3	59.9	1690	36.3	1510	0.584	23.5	460	0.269	984	6310	164	ND

	Average	61.3	1800	38.7	1593	0.538	19.6	482	0.415	1010	6225	165	1.54
	%RSD	5.42	4.33	4.75	4.36	12.2	20.0	4.40	29.3	2.25	3.26	1.73	22.9

4	Day 1	66.9	1840	33.6	1640	0.420	12.7	492	0.513	1363	6454	208	1.71
	Day 2	63.3	1800	33.7	1520	9.09	17.0	474	0.530	1330	6704	204	2.98
	Day 3	66.1	1840	32.9	1680	ND	22.1	492	0.243	1376	6950	208	1.04

	Average	65.4	1827	33.4	1613	4.76	17.3	486	0.429	1356	6703	207	1.91
	%RSD	2.32	1.03	1.06	4.21	129	22.1	1.77	30.7	1.42	3.02	0.842	51.7

5	Day 1	58.7	1740	37.5	1600	ND	18.7	489	0.647	710	5662	194	1.65
	Day 2	57.0	1720	37.8	1520	0.911	19.0	478	0.436	706	6182	191	2.13
	Day 3	56.4	1680	35.1	1570	0.584	17.8	467	0.269	700	6258	189	5.16

	Average	57.4	1713	36.8	2460	0.748	18.5	478	0.451	705	6034	191	2.98
	%RSD	1.73	1.46	3.27	1.34	31.0	2.65	1.90	34.3	0.569	4.39	1.19	52.2

6	Day 1	61.4	1690	37.1	1680	1.22	20.1	465	0.447	1136	6923	198	1.75
	Day 2	60.9	1610	37.7	1570	0.391	18.3	455	0.396	1117	7160	201	1.82
	Day 3	61.0	1660	36.0	1720	ND	27.5	455	0.243	1144	7312	194	1.92

	Average	61.1	1653	36.9	1657	0.806	22.0	458	0.362	1132	7132	198	1.79
	%RSD	0.348	1.99	1.90	3.83	72.7	18.0	1.04	24.0	0.989	2.24	1.35	4.86

Pool	Day 1	64.1	1730	34.9	1690	0.660	17.4	477	0.540	1016	6355	195	2.17
	Day 2	59.6	1690	35.5	1500	0.705	16.0	466	0.410	992	6416	194	2.06
	Day 3	64.7	1830	35.3	1750	3.74	23.0	492	1.22	1040	6136	179	ND

	Average	62.8	1750	35.2	1647	1.70	18.8	478	0.722	1016	6302	189	2.12
	%RSD	3.62	3.36	0.73	6.47	84.8	16.0	2.20	49.0	1.93	1.91	3.88	3.41

Average		61.3	1779	35.0	1754	1.79	21.8	480	0.490	1032	6825	197	1.96
% Diff from pool		−2.40	1.68	−0.725	6.51	5.05	15.9	0.397	−32.1	1.58	8.29	4.49	−7.52

Values reported in units of μg/mL

Values were not found to be greater than the IDL (Table 3)