Why do I need a calcium blood test?Your health care provider may have ordered a basic metabolic panel, which includes a calcium blood test, as part of your regular checkup, or if you have symptoms of abnormal calcium levels.Symptoms of high calcium levels include:Nausea and vomitingMore frequent urinationIncreased thirstConstipationAbdominal painLoss of appetiteSymptoms of low calcium levels include:Tingling in the lips, tongue, fingers, and feetMuscle crampsMuscle spasmsIrregular heartbeatMany people with high or low calcium levels do not have any symptoms. Your health care provider may order a calcium test if you have a pre-existing condition that may affect your calcium levels. These include:Kidney diseaseThyroid diseaseMalnutritionCertain types of cancer
