Table 1: Metal Levels in Blood, Hair and 24-Hour Urine Samples
Laboratory Investigation |
Number of ALS Subjects |
Mean Level--ALS Subjects (units) |
Standard Deviation (SD) |
Normal Range |
Urine |
|
|
|
|
Arsenic |
110 |
52.3 (mcg/L) |
66.1 |
0 – 80 mcg/L |
Lead |
110 |
13.7 (mcg/L) |
10.9 |
0 – 50 mcg/L |
Mercury |
112 |
8.9 (mcg/L) |
2.7 |
0 – 20 mcg/L |
Cadmium |
98 |
0.9 (mcg/L) |
2.9 |
0 – 3 mcg/L |
Thallium |
79 |
0.9 (mcg/L) |
1.8 |
0 – 2 mcg/L |
Cobalt |
70 |
0.5 (mcg/L) |
0.1 |
0 – 2 mcg/L |
Aluminum |
8 |
12.9 (mcg/24 hr) |
8.9 |
7 – 40 mcg/24 hr |
Serum |
|
|
|
|
Lead |
86 |
4.2 (mcg/dL) |
2.9 |
0 – 25 mcg/dL |
Arsenic |
6 |
10 (mcg/L) |
0 |
0 – 60 mcg/L |
Mercury |
6 |
15.2 (ug/L) |
6.4 |
0 – 50 ug/L |
Hair |
|
|
|
|
Lead |
4 |
1.9 (ug/GM) |
2.6 |
0 – 0.99 ug/GM |
Arsenic |
5 |
0.2 (ug/GM) |
0.4 |
0 – 0.9 ug/GM |
Mercury |
5 |
1.7 (ug/GM) |
1.1 |
0 – 24.9 ug/GM |
Serum Ferritin |
|
|
|
|
Male |
6 |
668.0 (ng/mL) |
785.1 |
22-322 ng/mL |
Female |
6 |
237.2 (ng/mL) |
180.3 |
10-291 ng/mL |