Order Calcium Blood Test (Total Calcium) from JustLabs for $5 ($23 all-in for a single-test order: $5 + one $18 lab & physician order fee per order). Price includes lab processing at Quest Diagnostics. No insurance required.
This test measures total calcium in your blood. Your body keeps blood calcium in a tight range using parathyroid hormone and vitamin D, so a high or low result can point to parathyroid, vitamin D, kidney or bone conditions.
About 99% of your body's calcium is in your bones and teeth; the 1% in your blood is what your nerves, muscles and heart rely on minute to minute. Your body holds blood calcium in a tight range through parathyroid hormone (PTH), vitamin D and the kidneys, drawing on the bones when needed.
This is a total calcium test. About half of blood calcium is bound to proteins, mainly albumin, and half is free (ionized). Normally the two stay in balance, so total calcium is a good estimate. When albumin is low, total calcium can read low even though the active, free calcium is normal, so clinicians often read calcium alongside albumin.
A high calcium is most often explored with a parathyroid hormone test, because an overactive parathyroid gland is a common cause. A low calcium leads clinicians to look at vitamin D, magnesium, albumin and kidney function. Many people with mildly abnormal calcium have no symptoms, and it is often found on a routine panel.
Calcium is also included in our Basic Metabolic Panel, Comprehensive Metabolic Panel and Renal Function Panel. Choose this single test when you only need to re-check calcium, for example to confirm a borderline high result or to monitor vitamin D supplements your clinician has you on. If high calcium is the question, our PTH, Intact and Calcium test measures both together. A calcium blood test does not measure bone density.
Price
$5
All-in
$23
incl. $18 lab & physician fee
Results
1-3 business days
Fasting
Not Required
What's Measured
What This Test Measures
This test measures total calcium in serum: the protein-bound calcium plus the free (ionized) calcium together. Calcium levels are controlled by parathyroid hormone, vitamin D, calcitonin and adrenal steroids, and calcium is involved in nerve and muscle activity, enzyme activity, bone metabolism and blood clotting. This test does not separately measure ionized calcium.
Who Should Consider This Test
People re-checking a calcium that came back high or low on a previous panel; people with kidney disease, parathyroid or thyroid conditions, malabsorption, or a history of kidney stones; people taking vitamin D or calcium supplements, or medicines that affect calcium, whose clinician wants it checked; and people with symptoms that can come from abnormal calcium.
Health Insights
Conditions Screened
Related Symptoms
When to Get Tested
Any time of day; Quest's main listing for this code has no fasting requirement. One Quest performing laboratory lists overnight fasting as preferred, so if it is easy for you, a morning draw after an overnight fast (water is fine) is a reasonable choice, especially if you are comparing with earlier fasting results.
No fasting needed. How to prepare for your blood test →
Understanding Your Results
Quest's adult reference ranges for this code are 8.6-10.3 mg/dL for men, and for women 8.6-10.2 mg/dL (ages 20-49) and 8.6-10.4 mg/dL (over 49); your report shows the range that applies to you. A high calcium (hypercalcemia) can reflect overactive parathyroid glands (hyperparathyroidism), certain cancers including those that spread to bone, bone disorders such as Paget disease, or too much vitamin D over time; the usual next step is a PTH test with a repeat calcium. A low calcium (hypocalcemia) can reflect low blood protein (albumin) from liver disease or malnutrition, underactive parathyroid glands, low dietary calcium, low vitamin D or magnesium, pancreatitis or kidney disease. Diet and medicines can also affect calcium, so an abnormal result does not always mean a condition needing treatment. JustLabs results are informational; review them with a clinician.
What to Expect
After placing your order, we send it straight to Quest Diagnostics — there is no consent form to sign and no partner email to wait for. Your requisition is usually ready to download from your dashboard within about an hour, and you can book your blood draw at any Quest Diagnostics location.
The blood draw typically takes just a few minutes. Results are usually available within 1-3 business days and will appear in your secure JustLabs dashboard.
Our results include reference ranges and easy-to-understand indicators showing whether your values are within normal limits.
How much does the Calcium test cost?
The Calcium test costs $5 at JustLabs — $23 all-in, since the $18 lab & physician order fee is charged once per order, however many tests you add. The price is fixed before your blood draw; no insurance or doctor visit needed.
| Option | Price | Order all-in | Notes |
|---|---|---|---|
| Calcium at JustLabsDrawn at Quest Diagnostics | $5 | $23 | Includes the one $18 fee, charged once per order |
Paying with an HSA or FSA? See which lab tests qualify
Frequently Asked Questions
Hospital cash price: $120–$200
$5
+ $18 order fee · $23 all-inOne $18 fee per order covers your Quest blood draw and the independent physician order, however many tests you add.
- Results in 1-3 business days
- No fasting required
- Physician order included
No insurance needed · HSA/FSA eligible
- Physician-ordered
- CLIA-certified Quest lab
- Drawn at Quest Diagnostics
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PTH + Calcium
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$62
Measures parathyroid hormone and blood calcium together, the pairing clinicians use to tell whether the parathyroid glands are working properly.
Biomarkers:
Parathyroid Hormone (PTH), Intact, Calcium
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Biomarkers:
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Albumin
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$5
Measures albumin, the main protein made by your liver. Low levels can reflect liver or kidney disease, poor nutrition or inflammation.
Biomarkers:
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Phosphorus
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Measures phosphate, a mineral that works with calcium in bones and is controlled by the kidneys, vitamin D and parathyroid hormone.
Biomarkers:
Phosphorus (Phosphate)
$5
+ $18 order fee · $23 all-in