Red Cell Casts

How to Subscribe
MLS & MLT Comprehensive CE Package
Includes 176 CE courses, most popular
$109Add to cart
Pick Your Courses
Up to 8 CE hours
$55Add to cart
Individual course$25Add to cart
Need multiple seats for your university or lab? Get a quote
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)
Red Cell Casts

Red cell casts contain intact and disintegrated or crenated red blood cells. A red cell cast appears yellow or reddish-brown when a large number of cells are enclosed within the matrix of the cast. The presence of red cell casts in the urine indicates bleeding into the nephron.
In order for a cast to be considered a red cell cast, the outlines of the red cells must be clearly visible in at least one area of the cast.
The image on the right is a red cell cast (400X magnification) viewed using brightfield microscopy.