Crystals (urine)

Urine_other Unit: Urine test

May indicate stone-forming tendency or metabolic disorder

Also known as: Urine Crystals,Crystalluria

Reference Ranges

Clinical Reference

Type matters: calcium oxalate, uric acid, struvite, cystine

Kidney Stones High

Gout High

Dehydration High

🍎 Food Moderate sodium and animal protein; both raise stone risk.

🍎 Food For oxalate stones: limit spinach, rhubarb, beets; keep normal calcium intake with meals.

💡 Other Drink 2.5-3 liters of water daily to dilute urine and reduce crystal formation.

Magnesium Tier A May Decrease

Moderate evidence; magnesium reduces calcium-oxalate stone formation.

Magnesium glycinate 200–300 mg elemental Mg/day Evening

PMID 33419615 PMID 23440790 PMID 32956536
Potassium Tier A May Decrease

Strong evidence; potassium citrate raises urine pH and reduces calcium stone recurrence.

PMID 29907351 PMID 38519925 PMID 24869750
Vitamin B6 Tier A May Decrease

Limited evidence; high-dose B6 may reduce oxalate production in susceptible individuals.

Pyridoxal-5-phosphate (P-5-P) 25–50 mg/day Morning

PMID 23335472 PMID 19821378 PMID 30431328

Am I at risk for kidney stones given the crystals in my urine? Crystal type (calcium oxalate, uric acid, struvite, cystine) guides dietary and pharmacologic prevention.

Upload your blood test to see how your Crystals (urine) compares to reference and optimal ranges.