Understand Burr Cells (Echinocytes)

Burr Cells (Echinocytes)

Here’s what it reflects — and what to do about it.

Longetic pulls together every lab and record you’ve had, follows how Burr Cells (Echinocytes) changes over time, and explains what’s shifting — so you walk into your next appointment prepared, with reminders for retests along the way.

Summarize with AI
9:41
Biomarker snapshot
Vitamin D
52ng/mL
Normal
LDL
165mg/dL
High
Glucose
92mg/dL
Normal
Vitamin B12
296pg/mL
Low
Focus zones
Sleep & Recovery
It reflects how your daily choices shape your long-term health
Lifestyle Habits
It reflects how your daily choices shape your long-term health
Stress Level
It reflects how your daily choices shape your long-term health
Vitality
It reflects how your daily choices shape your long-term health
Journey
Discovery
Longevity
Profile
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.

What to know about Burr Cells (Echinocytes)

Understanding Burr Cells (Echinocytes) means knowing what it reflects, what tends to move it, and the signs that suggest it’s worth a closer look — so you can bring the right questions to your next appointment.

This glossary entry is for informational purposes only and is not a substitute for professional medical advice. Read our Medical Disclaimer.

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).

Track your Burr Cells (Echinocytes) over time with Longetic

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