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Calcium

Calcium Blood Test

Calcium is crucial for women's bone health, particularly during pregnancy, breastfeeding, and menopause when calcium needs may increase significantly.

Doctor's Assessment Included

Reference Ranges

See the value that applies to you:

Age years

Choose male or female — this range differs by sex.

Enter your age — this range changes with age.

This range also depends on context such as cycle phase or sample material; the highlighted rows apply to your group.

Your reference range

mmol/l

2,18 2,57 mmol/l

Reference ranges by group, in mmol/l
Age	Reference range (mmol/l)	Relative scale
6–12 years	2,29–2,56 mmol/l	2,29 2,56
13–18 years	2,23–2,57 mmol/l	2,23 2,57
19 years and older	2,18–2,55 mmol/l	2,18 2,55

2,18 2,57 mmol/l

Source: NVKC Reference population: Nederlandse huisartsenpopulatie (NUMBER, n=7.574.327)

Reference ranges may vary between laboratories. When you order a test, a BIG-registered doctor assesses your personal results in context. For treatment decisions, discuss your results with your GP.

Check your own value

Calcium: what this test measures

This test measures the total calcium level in your blood. It reflects both the calcium bound to proteins and the free (ionised) calcium available for metabolic functions.

Calcium: why this value matters

Calcium balance is critical for bone health, heart function, and muscle contraction. Abnormal levels may be associated with bone disorders, parathyroid conditions, or kidney problems. Consult your healthcare provider for personalised advice.

Calcium: when is testing worthwhile?

Testing may be recommended as part of routine health screening, or if you have symptoms such as bone pain, muscle cramps, fatigue, or a history of kidney stones.

Calcium: symptoms of a high or low value

Low Levels

Symptoms of low calcium may include muscle cramps or spasms, numbness and tingling in fingers, fatigue, and in severe cases, heart rhythm abnormalities.

High Levels

Symptoms of high calcium may include excessive thirst, frequent urination, abdominal pain, nausea, bone pain, and confusion. Persistent high calcium warrants medical evaluation.

Calcium: what to do about an abnormal value

Female

If Low

Low calcium increases the risk of osteoporosis. Consider calcium and vitamin D supplementation.

If High

High calcium may indicate hyperparathyroidism. Consider PTH testing.

Calcium: lifestyle and this value

Include calcium-rich foods such as dairy products, leafy greens, almonds, and fortified foods. Ensure adequate vitamin D intake to support calcium absorption. Regular weight-bearing exercise also supports bone health.

Calcium: frequently asked questions

How much calcium do I need daily?

Daily calcium needs vary by age and sex. Your healthcare provider can advise on the right amount based on your individual circumstances.

Can I take too much calcium?

Yes, excessive calcium supplementation may increase the risk of kidney stones and may affect cardiovascular health. Discuss supplementation with your healthcare provider.

What affects calcium absorption?

Vitamin D is essential for calcium absorption. Factors such as age, certain medications, and digestive conditions may also affect how well your body absorbs calcium.

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Test Products

This marker is included in the following test panels.

Health Checkups

Complete Metabolic Panel

Comprehensive metabolic panel: electrolytes, kidney, liver, glucose, HbA1c, and protein.

HbA1c (Glycated Hemoglobin) ALT (Alanine Aminotransferase) Calcium ALP (Alkaline Phosphatase) AST (Aspartate Aminotransferase) Bilirubin (Total) Urea (BUN) Creatinine eGFR (Estimated Glomerular Filtration Rate) Glucose (Fasting) Bicarbonate Chloride Sodium Potassium Albumin Total Protein Bilirubin (Direct) Bilirubin (Indirect)

€149,-

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Medical standards

Dr. Naimi oversees the medical standards behind our content and assessments.

Medical policy

CIBG Ministerie van Volksgezondheid,
Welzijn en Sport Official BIG registration BIG 49928676701