Version August 2025
| Abdominal radiograph for leaded foreign bodies or flecks in the GI tract |
| Free erythrocyte protoporphyrin (if not already obtained) |
| Serum electrolytes |
| Blood urea nitrogen |
| Serum creatinine |
| Serum calcium |
| Serum magnesium |
| Serum aspartate aminotransferase and alanine aminotransferase |
| Urinalysis |
| Neuroimaging (eg, computed tomography of the brain) in patients with encephalopathy |
| Screening for G6PD deficiency (eg, fluorescent spot test or methemoglobin reduction test)* |
GI: gastrointestinal; G6PD: glucose-6-phosphate dehydrogenase.
* Indicated for patients of an ethnicity with high prevalence for the disease (eg, African-American or Mediterranean descent) who are receiving succimer or dimercaprol (no longer manufactured). However, chelation should not be delayed while awaiting results.