The Porphyrins Profile evaluates the Test Components of toxicity. Patterns of specific porphyrin elevations in urine may serve as functional markers of toxicity from toxic metals, such as mercury, lead, or arsenic, or other organic chemicals. The Porphyrins Profile measures seven porphyrins, total porphyrins, and two ratios to help you differentiate heavy metal toxicity, as well as monitor therapy in your patient. Please refer to full instructions sent with the kit.