Of course you want to make sure your family is protected from a potential health risk, but at the same time, you don't want to waste your time and resources avoiding something that is really benign.
The bilirubin test will determine if hyperbilirubinemia is present and, along with other diagnostic tests, help determine if the condition is relatively normal (benign) or possibly related to liver function problems or other conditions.
While sci-fi movies of the fifties typically employed robots as threats to either the individual characters or to mankind writ large, the literature and early TV presented much more benign views of robothood.
Physical examination and routine x rays may yield enough evidence to diagnose benign bone tumors, but removal of tumor tissue for microscopic analysis (biopsy) is the only sure way to rule out malignancy.
So any spell that is cast can return to the bearer three times as strong (this discourages the casting of negative intent) and the Wiccan rede demands that all spells be benign, or non-harmful to others.