A calcium blood test measures the amount of calcium in your blood. Too much or too little calcium in your blood may be a sign of a wide range of medical conditions, such as bone disease, thyroid disease, parathyroid disorders, kidney disease, and other conditions.
A blood calcium test is used to check your general health. It's also used to help diagnose or monitor many medical conditions, including those that affect your bones, kidneys, digestive system, thyroid, and parathyroid glands.
Source: MedlinePlus, U.S. National Library of Medicine
Normal range
- ≤ 1 y
- 8.7–11 mg/dL
- 1 y – 17 y
- 9.3–10.6 mg/dL
- 18 y – 59 y
- 8.6–10 mg/dL
- 60 y+
- 8.8–10.2 mg/dL
- Normal
- 8.6–10.2 mg/dL
- Female · ≤ 10 d
- 8.6–10.4 mg/dL
- Female · 11 d – 1 y
- 9.2–11 mg/dL
- Female · 12 y – 17 y
- 8.9–10.4 mg/dL
- Female · 18 y – 59 y
- 8.7–10.2 mg/dL
- Female · 2 y – 11 y
- 9.1–10.5 mg/dL
- Female · 59 y+
- 8.7–10.3 mg/dL
- Male · ≤ 10 d
- 8.6–10.4 mg/dL
- Male · 11 d – 1 y
- 9.2–11 mg/dL
- Male · 12 y – 17 y
- 8.9–10.4 mg/dL
- Male · 18 y – 59 y
- 8.7–10.2 mg/dL
- Male · 2 y – 11 y
- 9.1–10.5 mg/dL
- Male · 59 y+
- 8.6–10.2 mg/dL
Ranges from American Board of Internal Medicine (Laboratory Test Reference Ranges), LabCorp Test Directory, Mayo Clinic Laboratories (Test Catalog).
All 17 source ranges
What moves it
| Recommendation | When | Evidence | Source |
|---|---|---|---|
| Calcium — address deficiency | Low | National Institutes of Health - Office of Dietary Supplements |
What an abnormal result can be associated with
- A high result
- Hypercalcemia
- A low result
- Hypocalcemia
Associations from LOINC2HPO (Human Phenotype Ontology). This is reference information, not a diagnosis — only a clinician can interpret your result in context.
Details
- Sample
- Serum or plasma · LOINC
- Collection
- Serum gel tube · 0.5 mL · Mayo Clinic Laboratories (Test Catalog)
- Part of
- Basic metabolic panel · Comprehensive metabolic panel · Renal function panel
- Listed under
- Bone Diseases · Calcium · Parathyroid Disorders
- Code
- LOINC 17861-6 · mg/dL
- Also known as
- Ca, Cal