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Frozen (or may add 1–2 drops saturated HgCl3)
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Anticoagulants (warfarin and related compounds)
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Frozen, in airtight container
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Use only glass containers
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Copper (and Ni, Fe, Co, Cr, and Tl)
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Rush to laboratory or ship promptly, frozen in airtight container
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Fresh plus fixed in formalin
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Best to send affected bone(s)
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Lead (also Hg, Mo, Ni, and Tl)
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Heparinized blood preferred
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Consult with laboratory personnel on specific tests
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Body fluids (eg, aqueous humor)
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Organophosphates (and carbamates)
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Also send urine, blood, and stomach contents from clinically normal animals
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Gastric or rumen contents
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Polychlorinated (and polybrominated) biphenyls
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Other half fixed in formalin
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Sodium fluoroacetate (1080)
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Strychnine (and some other convulsants such as bromethalin)
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TDS (total dissolved solids)
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Vitamin D3 (rodenticides)
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Use “trace minerals” tubes
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