Used in research settings to quantify free erythrocyte protoporphyrin (FEP) levels in biological samples, this ELISA kit supports studies related to iron metabolism, erythropoiesis, and porphyrin disorders. It is particularly valuable in assessing iron deficiency, lead exposure, and anemias where FEP accumulates due to impaired heme synthesis. The assay enables high-throughput, sensitive detection, making it suitable for epidemiological studies, clinical research, and toxicology investigations. It is not intended for diagnostic use but serves as a tool for monitoring protoporphyrin changes in experimental models and population-based research.