Calcium, 24-Hour Urine without Creatinine
Measures how much calcium your kidneys excrete in a full day, a key screen for kidney stone risk.
Consider this test if:
- Recurrent kidney stones or a first stone with calcium-containing composition
- Working up high blood calcium, suspected hyperparathyroidism, or another calcium metabolism disorder
- Investigating bone loss alongside parathyroid and vitamin D testing
- Distinguishing familial hypocalciuric hypercalcemia from primary hyperparathyroidism
- Checking whether dietary or medication changes are affecting calcium excretion
- 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
Results are most meaningful after three days on a low-calcium, neutral-ash diet before and during collection. Where safe, drugs that affect mineral metabolism should be paused two to four weeks beforehand, including antacids, phosphates, diuretics, glucocorticoids, carbonic anhydrase inhibitors, and anticonvulsants; calcium supplements and loop diuretics raise urinary calcium, while thiazide diuretics lower it. Collection runs a full 24 hours: empty your bladder at the start and discard it, then collect every void including the final one at the same time the next day, using the acidified container provided. Record start and end times and total volume.
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 the total amount of calcium your kidneys excrete over a complete 24-hour period, reported in milligrams per day. High urinary calcium (hypercalciuria) is one of the established risk factors for kidney stones and also shows up in hyperparathyroidism, vitamin D excess, sarcoidosis, Paget disease, and bone-destroying conditions such as multiple myeloma. Low urinary calcium points toward hypoparathyroidism, vitamin D deficiency, osteomalacia, or familial hypocalciuric hypercalcemia. Because excretion reflects diet, intestinal absorption, bone turnover, and kidney handling all at once, a timed 24-hour collection is far more meaningful than a random spot sample.
This is the version without creatinine, reporting calcium as mass per 24 hours. The companion Calcium with Creatinine version adds a creatinine measurement to confirm the collection was complete, and serum calcium tests measure blood levels for a different question; this urine test is about how much calcium is actually leaving the body.
- Specimen
- Urine
- Measures
- Ratio
What you'll learn
-
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.
-
Your personalized action plan. Nutrition, supplements, and training in one clinician-reviewed protocol, updated as your results change.
-
Track your trends. Upload results from any lab and see each biomarker trend over time, so you know what is working.
-
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
-
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
Supplements at 30% off retail prices Coming soon
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. 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.
Recently viewed
Loading essentials…