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Calcium

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

27 published ranges, each from a named source
18 y – 60 y
8.6–10 mg/dL
60 y – 90 y
8.8–10.2 mg/dL
60 y+
8.8–10.2 mg/dL
Normal
8.6–10.2 mg/dL
Female · 59 y+
8.7–10.3 mg/dL
Male · 59 y+
8.6–10.2 mg/dL
Ranges from ARUP Laboratories Test Directory, American Board of Internal Medicine (Laboratory Test Reference Ranges), LabCorp Test Directory, Mayo Clinic Laboratories (Pediatric Test Catalog), Mayo Clinic Laboratories (Test Catalog).

All source ranges (27)
SourceSexAgeRange
American Board of Internal Medicine (Laboratory Test Reference Ranges) All all ages 8.6–10.2 mg/dL
ARUP Laboratories Test Directory All ≤ 10 d 7.6–10.4 mg/dL
ARUP Laboratories Test Directory All 10 d – 2 y 9–11 mg/dL
ARUP Laboratories Test Directory All 2 y – 12 y 8.8–10.8 mg/dL
ARUP Laboratories Test Directory All 12 y – 18 y 8.4–10.2 mg/dL
ARUP Laboratories Test Directory All 18 y – 60 y 8.6–10 mg/dL
ARUP Laboratories Test Directory All 60 y – 90 y 8.8–10.2 mg/dL
LabCorp Test Directory Female ≤ 10 d 8.6–10.4 mg/dL
LabCorp Test Directory Female 11 d – 1 y 9.2–11 mg/dL
LabCorp Test Directory Female 2 y – 11 y 9.1–10.5 mg/dL
LabCorp Test Directory Female 12 y – 17 y 8.9–10.4 mg/dL
LabCorp Test Directory Female 18 y – 59 y 8.7–10.2 mg/dL
LabCorp Test Directory Female 59 y+ 8.7–10.3 mg/dL
LabCorp Test Directory Male ≤ 10 d 8.6–10.4 mg/dL
LabCorp Test Directory Male 11 d – 1 y 9.2–11 mg/dL
LabCorp Test Directory Male 2 y – 11 y 9.1–10.5 mg/dL
LabCorp Test Directory Male 12 y – 17 y 8.9–10.4 mg/dL
LabCorp Test Directory Male 18 y – 59 y 8.7–10.2 mg/dL
LabCorp Test Directory Male 59 y+ 8.6–10.2 mg/dL
Mayo Clinic Laboratories (Test Catalog) All ≤ 1 y 8.7–11 mg/dL
Mayo Clinic Laboratories (Pediatric Test Catalog) All ≤ 1 y 8.7–11 mg/dL
Mayo Clinic Laboratories (Test Catalog) All 1 y – 17 y 9.3–10.6 mg/dL
Mayo Clinic Laboratories (Pediatric Test Catalog) All 1 y – 17 y 9.3–10.6 mg/dL
Mayo Clinic Laboratories (Test Catalog) All 18 y – 59 y 8.6–10 mg/dL
Mayo Clinic Laboratories (Pediatric Test Catalog) All 18 y – 59 y 8.6–10 mg/dL
Mayo Clinic Laboratories (Test Catalog) All 60 y+ 8.8–10.2 mg/dL
Mayo Clinic Laboratories (Pediatric Test Catalog) All 60 y+ 8.8–10.2 mg/dL

What moves it

cited guidance. not medical advice
Calcium — address deficiency when 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
Cal, Ca
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