Calcium
A core mineral marker for bone, nerve, muscle, parathyroid, and kidney function.
Consider this test if:
- Symptoms of high calcium such as excessive thirst, frequent urination, constipation, bone pain, or kidney stones
- Symptoms of low calcium such as muscle cramps, tingling, numbness, or twitching
- Investigating parathyroid disease, bone disorders, or kidney function
- Tracking calcium during vitamin D, calcium, or thiazide therapy
- Establishing a baseline as part of a routine metabolic check
- HSA/FSA eligible
- Typical results in 1 day · Reviewed by a real clinician
- Drawn at a CLIA/CAP-accredited lab near you ·
Pre-test considerations
No fasting is required for calcium alone. Prolonged tourniquet time during the draw can falsely raise the reading. High-dose vitamin D or calcium supplements affect levels, so note your current routine; an abnormal result is best confirmed with albumin or ionized calcium.
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What this test is for
This test measures total calcium in the blood, which includes both the protein-bound fraction and the free, active fraction. Calcium is essential for nerve signaling, muscle contraction, heart rhythm, blood clotting, and bone structure, and the body holds it in a tight range. High calcium points to overactive parathyroid glands, certain cancers, excess vitamin D, or dehydration, while low calcium is linked to underactive parathyroids, vitamin D deficiency, kidney disease, and low magnesium. Because nearly half of blood calcium is bound to albumin, the result is interpreted alongside albumin, and ionized calcium is the better measure when protein levels are abnormal or readings are borderline.
This is the routine, first-line calcium measurement. The Ionized Calcium test isolates the active free fraction for ambiguous cases, the 24-hour urine calcium tests measure how much you excrete, and the PTH with Calcium pairing is used to work up a confirmed abnormal level.
- Specimen
- Serum or plasma
- Measures
- Mass concentration
What you'll learn
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Insights that connect the dots. A clinician reads your whole picture, not one result in isolation, connecting family history, past results, and lifestyle into clear next steps.
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Your personalized action plan. Nutrition, supplements, and training in one clinician-reviewed protocol, updated as your results change.
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Track your trends. Upload results from any lab and see each biomarker trend over time, so you know what is working.
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Never miss a recheck. Mito tells you what is worth retesting and when, then reminds you so nothing slips.
What to expect
- 1 Book instantly
Click, book, done. Choose a convenient lab location near you. Transparent, up-front pricing.
- 2 Quick lab visit
Testing to fit your busy schedule, usually 15 minutes or less. Walk-in and appointments available.
- 3 Typical results in 1 day
Your results post straight to your dashboard as soon as the lab completes them.
- 4 Expert guidance
Included with Mito membership. A clinician reviews your results and your personalized action plan follows, with clear next steps.
Everything your health needs,
in one membership
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Every test at our cost
Members pay our cost on every test, with lab fees passed straight through. The full receipt is itemized, never padded.
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Continuous tracking, all in one place
Upload past labs and watch your trends over time. Every marker and visit lives in one longitudinal record, so all your care stays together.
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Year-round clinician support
Text anytime and get clinician-reviewed answers. When you want to go deeper, 1:1 consultations are available at affordable rates.
All for $9/month
Order any test or consult without joining. For $9/month, members unlock member prices, trend tracking, and year-round clinician guidance.
Mito Membership
$9 /mo
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Without membership
$0
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Frequently asked questions
View all FAQsHow does pricing work?
Every test shows the member price next to the standard non-member price, so you can see what membership saves you. The member price is our cost, covering the lab and what it takes to run the service. It is never a profit on the test itself. Mito makes its money on the $9 membership, not on marking up your tests. Membership is $9 per month, and any applicable lab order or draw fee is itemized before you pay.
Where do I get tested?
Choose an available partner lab at checkout. If your cart contains multiple blood tests, Mito helps consolidate the eligible tests at one lab when possible. At-home kits and scans follow the collection or appointment process shown on their product page.
Is this eligible for HSA/FSA?
Yes. Eligible tests can be paid for with an HSA or FSA card at checkout.
When will I get my results?
Your results appear in your Mito dashboard after the laboratory completes processing. A clinician then reviews them before your analysis and personalized action plan are finalized. Timing varies by test, and specialty assays and at-home kits may take longer.
Do I need a physician's order?
No. Mito provides the laboratory order when one is required, so you do not need to arrange a separate physician visit before purchasing.
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