A quick blood test that checks your calcium level, important for bones, muscles, nerves, and heart.
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Clinicians order calcium to evaluate bone health, parathyroid function, kidney issues, or vitamin D problems. It helps explain symptoms like cramps, tingling, kidney stones, or fatigue, and monitors certain medicines or chronic conditions. Results often guide follow-up tests, such as ionized calcium, PTH, vitamin D, or kidney checks. You can test this marker with Aniva across Germany and Finland.
Clinicians order calcium to evaluate bone health, parathyroid function, kidney issues, or vitamin D problems. It helps explain symptoms like cramps, tingling, kidney stones, or fatigue, and monitors certain medicines or chronic conditions. Results often guide follow-up tests, such as ionized calcium, PTH, vitamin D, or kidney checks. You can test this marker with Aniva across Germany and Finland.
High: Levels can rise with dehydration, overactive parathyroid glands, too much vitamin D or calcium supplements, some medicines, or certain health conditions. Recheck if unexpected and review supplements and drugs; follow-up may include PTH, vitamin D, magnesium, and kidney tests.
Low: Levels can drop with low vitamin D, low magnesium, kidney problems, pancreatitis, or after major illness. You may notice cramps, tingling, or spasms. Consider checking ionized calcium and related markers; discuss next steps with your clinician.
Common factors that can skew results include dehydration or overhydration, prolonged tourniquet use or fist clenching, recent high-dose calcium or vitamin D supplements, thiazide diuretics, lithium, and antacids. Abnormal albumin, changes in blood pH, pregnancy, acute illness, strenuous exercise, and long bed rest can also affect total calcium. Sample handling matters: EDTA contamination or delayed processing may falsely lower results.
Special situations: confirm unexpected results with a repeat test; use ionized calcium when albumin is abnormal, in kidney disease, critical illness, or during pregnancy.
What does a calcium blood test show? It shows the calcium level in your blood, which supports bones, muscles, nerves, and heart.
Do I need to fast for this test? No. Eat and drink normally unless your clinician orders other fasting labs.
What can affect results? Hydration, supplements like calcium or vitamin D, thiazide diuretics, lithium, antacids, pregnancy, and long bed rest can change levels. Tell the lab about medicines and high-dose supplements.
How often should I test? It’s often part of routine panels or checked when symptoms or conditions warrant. Your clinician may recheck to confirm a change or monitor treatment.
How long do results take? Most labs report within 1–3 business days.
What should I discuss with my clinician? Ask whether albumin, ionized calcium, PTH, vitamin D, magnesium, or kidney tests are needed to clarify your result.
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