The page below is a sample from the LabCE course The Urine Microscopic: Microscopic Analysis of Urine Sediment. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

Learn more about The Urine Microscopic: Microscopic Analysis of Urine Sediment (online CE course) »
How to Subscribe
MLS & MLT Comprehensive CE Package
Includes 94 CE courses, most popular
$95 Add to cart
Pick Your Courses
Up to 8 CE hours
$50 Add to cart
Individual course$20 Add to cart

Granular Casts

Granular casts are composed of plasma protein aggregates and cellular remnants. Granular casts appear as irregularly-shaped cylinders of coarse or fine, highly refractive particles. A granular cast containing coarse brown granules is indicated by the yellow arrow in the image on the right (brightfield, 400X magnification).
The presence of an occasional granular cast is not considered pathologic.
Hyaline casts are also present in this field and are indicated by the blue arrows.