Granular Casts (Urine)
Granular casts are tubular casts containing cellular debris or protein aggregates from degenerating renal tubular cells. Coarse granular casts suggest acute tubular injury, such as from ischemia or nephrotoxins, while fine granular casts can occur in chronic kidney disease. Their presence generally warrants evaluation of kidney function and additional urinalysis findings.
Optimal range: who says what
No institution or named practitioner we track states an optimal target for Granular Casts (Urine). How we verify ranges.
- General guidance, no named sourceNonePresence suggests kidney follow-up; not an optimization target
- Lab reference intervalNone (normal)What a lab report flags against. A lab interval is not an optimal target.
3 providers include this
Urinalysis
Why Granular Casts (Urine) matters
Formed from degenerating tubular cells or protein, these casts indicate kidney tubular disease or acute kidney injury. Coarse granular casts suggest more acute damage; fine granular may indicate chronic kidney disease.
Which Providers Test Granular Casts (Urine)?
Empirical Health is both the cheapest ($190/year) and the most comprehensive (100+ biomarkers) panel that includes Granular Casts (Urine).
3 panels that include it, cheapest first
| Provider | Annual Cost | Total Biomarkers | $/Biomarker |
|---|---|---|---|
| $190 | 100+ | $1.90 | |
| $365 | 100+ | $3.65 | |
| $499 | 100+ | $4.99 |
$/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.
18 itemized panels do not include Granular Casts (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
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 Granular Casts (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 Granular Casts (Urine)?
No institution or named practitioner we track states an optimal target for Granular Casts (Urine). General guidance without a named source: None (Presence suggests kidney follow-up; not an optimization target). Lab reference interval: None (normal). That is what a lab report flags against, not an optimal target.
Which blood test providers include Granular Casts (Urine)?
3 of the 21 blood testing panels we itemize marker by marker include Granular Casts (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