Egg withdrawal period for Doxycycline

[Mrs. Light Sussex]

What is the withdrawal period for hens treated with Doxycycline?
Based on this 24 days seems to be enough, is that long necessary?

 

[EggSighted4Life]

I gather 26 days from that link since it says detected 2 more days in the yolk.

I'm not sure if this will be helpful, but it's the link I have regarding drug residues in eggs, good luck..
http://www.farad.org/publications/digests/122015EggResidue.pdf