"Why do some eggs have blood in them? More than just a spot."

Bayarjargal E.


Our Answer:

May 29, 2020
Other

4 white eggs, one with a question mark on it

Hi Bayarjargal,

This is a fantastic question - we're glad you asked it.

During grading, eggs are passed over a strong light known in a process known as candling. Candling searches for many things, including blood spots that may be present in the egg. The chances of blood spots in brown eggs is a little higher as their shells are darker and the pigment in the shell makes it harder to see during the grading process. Candling methods reveal most eggs with blood spots which are then removed, but even with electronic spotters, it is impossible to catch them all.

Blood spots are caused by the rupture of a blood vessel in the hen when the egg is forming, or by a similar incident in the wall of the oviduct. This is a natural process and the hen is not harmed when this happens. Both chemically and nutritionally, these eggs are safe to eat. If the spot is small, it can be removed with the tip of a knife before you cook the egg, if you wish. If it is a large rupture, although not harmful, it is not appetizing and for that reason it should be discarded.


Our answers are current as of the date they’re posted.

Related Questions

What happened to the HyperEye?
Can I feed my dog grocery store bought egg shells? Since farm fresh eggs are the same as store bought eggs. If yes, what are the things I have to keep in mind? Any brand recommendations?
How much protein is in a hard boiled egg?
Is it okay to eat raw eggs?
How are organic eggs produced?
How many days after the best before date is it safe to eat organic brown eggs?
Are Ontario eggs pasteurized?
How much protein in one egg?
What's the amount of protein in an egg?
Do I need to refrigerate store brought eggs?
How to steam eggs?
Are eggs considered a protein?