Calcium Oxalate Crystals (Urine)
Calcium oxalate crystals are the most common type seen in urine and are associated with the majority of kidney stones. Risk factors include dehydration, high-oxalate foods (spinach, rhubarb, nuts, chocolate), high sodium and animal protein intake, and certain metabolic conditions. Adequate fluid intake, dietary adjustments, and calcium intake with meals reduce stone formation.
Optimal range: who says what
No institution or named practitioner we track states an optimal target for Calcium Oxalate Crystals (Urine). How we verify ranges.
- General guidance, no named sourceNoneCommon finding; matters mainly in kidney-stone formers
- Lab reference intervalNone (normal)What a lab report flags against. A lab interval is not an optimal target.
2 providers include this
Urinalysis
Why Calcium Oxalate Crystals (Urine) matters
The most common type of kidney stone crystal. Risk increases with high-oxalate foods (spinach, nuts, chocolate), dehydration, and certain conditions. Adequate hydration and dietary modification can reduce risk.
Which Providers Test Calcium Oxalate Crystals (Urine)?
Empirical Health is both the cheapest ($190/year) and the most comprehensive (100+ biomarkers) panel that includes Calcium Oxalate Crystals (Urine).
2 panels that include it, cheapest first
| Provider | Annual Cost | Total Biomarkers | $/Biomarker |
|---|---|---|---|
| $190 | 100+ | $1.90 | |
| $365 | 100+ | $3.65 |
$/Biomarker is annual cost divided by the panel's advertised biomarker count, not the price of this one test. We track 23 blood test providers (32 plans); 21 of those plans are itemized marker by marker. Compare all of them.
19 itemized panels do not include Calcium Oxalate Crystals (Urine)
Superpower · WHOOP Advanced Labs · Labcorp OnDemand · Life Extension Elite · Everlywell · Mito Health · InsideTracker · Function Health · Marek Health Base · Marek Health Comprehensive · Marek Health Complete · Marek Health Executive · Oura Health Panels · SiPhox Health · Hims Labs · Healthspan · Vitality Blueprint Standard · Vitality Blueprint Elite · Ultrahuman Blood Vision Annual
11 providers not itemized in our matrix
We have not itemized these marker by marker (some sell tests one at a time), so this page cannot say whether they offer Calcium Oxalate Crystals (Urine). Check with them directly.
Life Extension Standard · Quest Health · Ultrahuman Blood Vision · Lifeforce · Hundred Health · Personalabs · Walk-In Lab · HealthLabs · WHOOP Specialized Panels · Marek Health Essential · Vitality Blueprint Upload
Frequently Asked Questions
What is the optimal range for Calcium Oxalate Crystals (Urine)?
No institution or named practitioner we track states an optimal target for Calcium Oxalate Crystals (Urine). General guidance without a named source: None (Common finding; matters mainly in kidney-stone formers). Lab reference interval: None (normal). That is what a lab report flags against, not an optimal target.
Which blood test providers include Calcium Oxalate Crystals (Urine)?
2 of the 21 blood testing panels we itemize marker by marker include Calcium Oxalate Crystals (Urine) in their panels. This biomarker has limited availability.
Medical Disclaimer
This information is for educational purposes only and is not medical advice. Always consult with a qualified healthcare provider about your specific health needs.
Last reviewed Aug 26, 2026 · First published Nov 30, 2025