Why do I need a PTH test?You may need a PTH test if your results were not normal on a previous calcium test. You may also need this test if you have symptoms of having too much or too little calcium in your blood.Symptoms of too much calcium include:Bones that break easilyMore frequent urinationIncreased thirstNausea and vomitingFatigueKidney stonesSymptoms of too little calcium include:Tingling in your fingers and/or toesMuscle crampsIrregular heartbeat
