Know your Granular Casts. Know your health.
Test your Urine Granular Casts and 100+ other biomarkers in a single blood draw.
Granular casts are cylindrical structures from the kidney tubules with a grainy texture, formed from the breakdown of cells or protein. A small number can appear after strenuous exercise or with dehydration and be harmless. In larger numbers, they can indicate kidney stress or damage, such as from acute kidney injury or chronic kidney disease. Their presence is read together with renal epithelial cells, protein, and kidney function tests. Persistent granular casts usually prompt a closer look at kidney health.
Granular Casts isn't sold on its own. It comes in a routine urinalysis, about $45. A fuller workup adds Vitamin D ($75), hs-CRP ($69), ApoB ($50), and ApoA1 ($50). You can test Granular Casts and 100 other biomarkers for $190 as part of an Empirical membership.
Empirical is FSA/HSA eligible, so you can pay with pre-tax dollars. Fast for 8-12 hours beforehand for the most accurate lipid and metabolic results, and expect results in days rather than weeks.
Granular Casts is drawn at 2,200+ Quest and BioReference patient service centers across the US, so there's usually one within a short drive. Browse the full directory to find the one closest to you.
Test your Urine Granular Casts and 100+ other biomarkers in a single blood draw.