Explore
Home FAQ
Understand Burr Cells (Echinocytes)

Burr Cells (Echinocytes)

Blood & blood cell markers

What the test generally measures, and what to ask about it.

Longetic keeps every lab and record you’ve had organized and easy to find, so your own Burr Cells (Echinocytes) values sit together on one chart and you walk into your next appointment prepared.

Summarize with AI
Updated Jul 13, 2026

What is Burr Cells (Echinocytes)?

Red blood cells with small even bumps around the edge that a lab may see on a blood smear.

Burr cells, also called echinocytes, are red blood cells whose surface shows regular short projections when viewed under the microscope. They are a finding a lab sees on a blood smear rather than a number you can track over time. Their presence can be associated with certain kidney or metabolic conditions, and sometimes they appear simply from how the sample was handled. A lab notes them when reviewing the shape of red blood cells.

This glossary entry is for informational purposes only and is not a substitute for professional medical advice. Read our Terms of Use.

References

"Blood Smear" Testing.com / Lab Tests Online (ADLM). www.testing.com/tests/blood-smear.

About our sources

Clinical / professional

Medical societies, specialty colleges, and professional associations whose consensus statements reflect clinical practice standards.

Peer-reviewed research

Original research articles and systematic reviews published in indexed journals and verified through PubMed or DOI.

History of updates

Published · Jul 13, 2026
First published, written from official sources (final verification pass pending).

Keep your Burr Cells (Echinocytes) results together in one place

Upload a lab, and Longetic reads it, explains it, and reminds you when it's time to re-check — so nothing slips between visits.