Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)
Detecting toxic thallium exposure.
Blood: 0 - 1 ng/mL; Urine: Less than 10 mcg/specimen (24 hr collection).
2 - 4 days
Blood: Collect blood in 7 mL royal blue top (metal free) tube with EDTA (K2). Refrigerate intact specimen. Heparinized specimens are unacceptable. Urine: Collect 24 hour urine in a clean, plastic container with no metal cap or glued insert and no preservative. Aliquot urine into a clean, plastic container with no metal cap or glued insert and refrigerate within 4 hours of completion of collection. Record 24 hour urine volume and collection dates/times on the request form. Collection must take place prior to or 96 hours after administering gadolinium-containing contrast media.
Thallium is a by-product of lead smelting and is found in some depilatories and rodenticides. Thallium is rapidly absorbed via ingestion, inhalation, skin contact, and through mucous membranes. Test sent to Mayo Medical Laboratories.