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.
Video consult with your Care Team
A 1:1 call to discuss your health.
What members say on Trustpilot
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.
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
-
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.
-
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.
-
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
cancel anytime
Without membership
$0
pay as you go
At-cost pricing on labs, scans, and more
Priority turnaround on your results
On-demand clinician consults when you need guidance
Personalized action plans across supplements, exercise, nutrition, and sleep
AI health coaching to help you act on your results
Year-round medical support, with in-chat clinician escalation
All your health records in one personal vault, with trends and biological age tracking
Early access to new diagnostics and product releases
More tests to consider
Loading essentials…
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 — never a profit on the test itself; Mito makes its money on the $9 membership, not on marking up your tests. Membership is $9/mo, and you still pay the lab’s order fee. Prices are itemized before you pay, with no hidden fees.
Where do I get tested?
Choose a partner lab (Quest, Labcorp, or BioReference) at checkout. If your cart spans multiple tests, we consolidate the whole order onto a single lab so you only make one visit.
Is this eligible for HSA/FSA?
Yes. This test is HSA/FSA eligible, and you can pay with your HSA/FSA card at checkout.
When will I get my results?
Your results post to your dashboard once your lab completes them, then a clinician reviews them and your full analysis and personalized action plan (with clear next steps) follow. Turnaround varies by test: specialty assays and at-home kits take longer, and each test shows its expected turnaround before you buy.
Do I need a doctor’s order?
No. Mito provides the lab order for you, so you can book and get tested without a separate doctor visit.
Recently viewed
Loading essentials…