Final answer:
While the question is about Coproporphyrin III, no specific range is provided; reference values depend on the laboratory and individual factors. The normal ranges of other substances like protein bound iron (FBI) and total iron binding capacity (TIBC) are indicative of how values can differ between individuals.
Step-by-step explanation:
The question about the normal range for Coproporphyrin III relates to laboratory testing and reference values in a medical context. While the question specifically asks about Coproporphyrin III, it's important to note that typical reference ranges for various substances can vary based on methodology used and population studied. For Coproporphyrin III, reference ranges will often be provided by the laboratory that performs the testing and will usually be influenced by the patient's age, gender, and other individual factors.
To draw a parallel with the related factual information provided, the normal content of protein bound iron (FBI) differs between males and females, similar to how other substances' normal ranges may differ. In the context of iron metabolism, the total iron binding capacity (TIBC) remains consistent across sexes, demonstrating how some values remain constant while others vary. Knowledge of these ranges is crucial for diagnosing and monitoring various medical conditions.