How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Dr. Michael Salkin Your Own Question
Dr. Michael Salkin
Dr. Michael Salkin, Veterinarian
Category: Vet
Satisfied Customers: 33275
Experience:  University of California at Davis graduate veterinarian with 45 years of experience.
Type Your Vet Question Here...
Dr. Michael Salkin is online now

Hi there, Could you please see below the reading of 15 year

This answer was rated:

Hi there,

Could you please see below the reading of 15 year old chocolate point siamese, what does this indicate?

Result Units Interval
TOTAL T4 < 3.89 nmo1/1 15.0-40.0

Much appreciated!
Aloha! You're speaking with Dr. Michael Salkin
The normal feline total thyroid hormone level (T4) ranges from 15 nmol/L to 40 nmol/L at the lab at which the test was run. <3.89 nmol/L (less than 3.89 nmol/L), then, is a very low total thryoid hormone level and tells us that Sorvino is hypothyroid. This may be acceptable in cats treated for hyperthyroidism as long as these cats act normal and feel well.

Please respond with further questions or concerns if you wish.
Customer: replied 3 years ago.

Mahalo! Dr Michael Salkin!


Thank you for your expertise....he has lost muscle mass and is not being treated for anything....? What would this signify....age? He has a wild appetite! He has been taking Y/D hills...thrown up alot on it!



Something is amiss. His appetite, vomiting, and wasting indicates hyperthyroidism for which the Y/D has been prescribed yet his T4 reflects hypothyroidism. Ordinarily, a 3.89 would indicate success in treatment yet his symptoms suggest otherwise.

Louella, I need to you to have Sorvino's vet check with the lab. I suspect a lab error. Please continue our conversation if you wish.
Dr. Michael Salkin and 2 other Vet Specialists are ready to help you
Thank you for your kind accept. I appreciate it.

I'm going to check back with you in a few days for an update. Feel free to return to our conversation - even after rating - prior to my contacting you if you wish.

Please disregard the info request.
May I have an update on Sorvino, please?