Are the Calcium and Alkaline Phosphatase in the Blood Test for Trace Elements the Same?

A one-and-a-half-month-old baby is experiencing nape baldness and milk regurgitation, and someone suggested it might be due to calcium deficiency. The parents have already undergone a trace element test, which shows no calcium deficiency. What tests are needed if there is a suspicion of low blood calcium? Is there a test called alkaline phosphatase? Is this test the same as the calcium in trace elements?
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Baby at 6 Months Shows Abnormal Blood Test Results

A 6-month-old baby’s blood test results indicate elevated white blood cells, decreased red blood cell count, and increased platelets, along with abnormal levels of red blood cell sedimentation, hemoglobin, lymphocyte count, mean corpuscular hemoglobin concentration, mean corpuscular volume, mean platelet volume, median cell count, and median cell ratio. What could be the cause?
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