DD 5 Weeks had a virus last week and is still not well in herself, she had bloods took to rule out infection and they came up with high calcium levels. The blood test was repeated a week later and this to has come back high. Hospital are going to repeat in a month. Does anyone know what can cause a high calcium level in blood, or if i should be looking out for anything cos dd still not to well, has just cried all day today and unsure wether to take her to gp.