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. 2021 Mar 6;18(5):2652. doi: 10.3390/ijerph18052652

Table 6.

Trace element levels (mean and range) in whole blood and plasma of males and females.

Element (µg/L) Whole Blood (n = 120) Mann–Whitney U Test Plasma (n = 120) Mann–Whitney U Test
Female (n = 49) Male (n = 71) Significance Female (n = 61) Male (n = 59) Significance
Ag 0.20 (0.1–0.67) 0.17 (0.1–0.82) - -
Al - - 6.4 (<4–21.8) 7.4 (<4–81.8)
As 2.7 (0.2–42) 1.8 (0.2–13.0) - -
Bi <0.1 <0.1 <0.08 <0.08
Br 5140 (2820–12,180 4830 (3120–9050) - -
Cd 0.81 (<0.8–0.99) 0.80 (<0.8–0.93) - -
Co 0.37 (<0.2–1.1) 0.30 (<0.2–0.86) 0.50 (0.22–1.34) 0.44 (0.21–1.1)
Cr <5 <5 <1.7 <1.7
Cu 930 (710–1420) 770 (650–950) p < 0.001 1240 (706–2485) 960 (672–1403) p < 0.001
Hg 1.8 <0.8–9.3) 2.1 (<0.8–7.7) - -
I 32.5 (20.1–82.7) 28.5 (19.5–44.6) p = 0.009 - -
Mn 10.0 (5.7–17.6) 9.6 (4.5–19.5) 1.1 (<1–3.1) 1.0 (<1–1.3)
Mo 0.51 (<0.3–1.7) 0.47 (<0.3–1.2) 0.85 (0.27–2.67) 0.96 (0.26–3.0)
Ni 2.0 (<2–4.0) <2 - -
Pb 13.2 (3.8- 49.6) 13.9 (4.9–45.0) - -
Sb 4.0 (2.8–5.9) 4.1 (2.6–6.2) - -
Se 140 (122–203) 142 (118–224) 124 (82- 179) 130 (101–161) p = 0.003
Tl 0.061 (<0.06–0.10) 0.07 (<0.06–0.16) p = 0.016 0.11 (0.05–0.20) 0.10 (0.04–0.20)
U <0.1 <0.1 - -
V <0.45 <0.45 0.20 (<0.2–0.22) 0.20 (<0.2–0.22)
Zn 6540 (4940–8390) 6900 (4620–9250) p = 0.016 1140 (850–1660) 1160 (819–1496)

Significant differences were found between female and male for whole blood Cu, I, Tl and Zn, and for plasma Cu and Se.