Should i be concerned if my daughter was recently diagnosed with biotinidase deficiency. need help with reading lab report(s).?

VERY concerned: If you do not follow instructions exactly, your daughter will end up severely disabled. If you comply, she should have a good life. This is why we test for it. And please forgive my frankness -- if the folks who gave you the reports did not explain them clearly, go right back and demand that they do so. Everything depends on your being accurately informed and pro-active.