My vet gave me the "norms" for thyroid in guinea pigs, from The Clinical Chemistry of Laboratory Animals textbook. I don't understand the units, but hopefully the numbers will help other owners and vets in diagnosing thyroid problems.
T4: male 2.9 +/- 0.6 ug/dL, female 3.2 +/- 0.7 ug/dL
T3: male 39 +/- 17 ng/dL, female 44 +/- 10 ng/dL
Free T4: male 1.26 +/- 0.41 ng/dL, female 1.33 +/- 0.25
Free T3: male 257 +/- 35 pg/dL, female 260 +/- 59 pg/dL
Lynx- No problem! Still trying to get a grasp on the forums, so feel free to edit anything you need to.
(Hope I posted the photo right. Feel free to edit!)
Here he is in the pen. So tiny compared to his brother, who, ironically, was always the smaller of the duo. It's like they somehow switched weights, and then he got sick.