MedLabBuddy

Study and Reference material for Medical Laboratory Sciences

Waxy Casts

Waxy casts may be seen in a variety of disease states, such as end-stage renal disease, diabetic neuropathy, acute glomerulonephritis, etc.

Appearance

Waxy casts have a high refractive index, giving them their waxy look. While the cast is still cylindrical in shape, it is more broad and may have blunt ends or cracks.

Lookalikes

Fibers may be confused for waxy casts. However, fibers are typically longer with sharper edges. Additionally fibers are birefringent under polarized light.