Pediatrics - 44486: Unclosed Fontanelle and Trace Element Testing

My child’s fontanelle has not fully closed, there are white spots on her fingernails, and her hair has been black and abundant until recently, when she started growing a few white hairs. What might she be lacking? Do we need to conduct a trace element test? What kind of nutrition should we supplement in her diet to address her symptoms? Which nutritional supplements should we take? I have given her Longmu Strong Bone Powder mixed with milk for two boxes, is that okay? After consuming it, her appetite has increased, but the aforementioned symptoms have not disappeared.
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