Casts (Urine)
Urine casts are cylindrical structures formed in the kidney tubules. They are examined under a microscope and their type can help diagnose various kidney conditions.
Category: Urinalysis
Also known as: urine casts, casts urine, hyaline casts, urine hyaline casts, cilindri
Reference range: 0–2 /LPF (Source: ABIM)
Standard unit: /LPF
High values may indicate
High numbers of casts in urine may indicate kidney disease, such as acute tubular necrosis, glomerulonephritis, or pyelonephritis, depending on the type of cast.
Low values may indicate
Low or absent urine casts is normal. Small numbers of hyaline casts can be found in healthy individuals after exercise.
Frequently asked questions
- What is a normal Casts (Urine) level?
- A typical reference range for Casts (Urine) is 0–2 /LPF (source: ABIM). Reference ranges vary by laboratory, age, and sex, so always compare against the range on your own lab report.
- What units is Casts (Urine) measured in?
- Casts (Urine) is most commonly reported in /LPF. Labs in different countries may use other units — you can convert between them with BloodId's blood test unit converter.
- Where do Casts (Urine) reference ranges come from?
- BloodId uses ABIM standard reference ranges and educational information from MedlinePlus (see our methodology). Reference ranges still vary by lab, age, and sex, so always compare against your own report.
- Can I track Casts (Urine) over time?
- Yes. Upload results from any lab and BloodId charts your Casts (Urine) over time against its reference range, so you can see whether the trend is rising, falling, or stable.
Related biomarkers
Source: MedlinePlus, U.S. National Library of Medicine
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