Jacks blood results( a little long)

ponyjackpal <takarri@...>

Hello everyone

I have got some of Jacks blood results back & I would appreciate some
help in understanding.

The test results read as sent:

General Biochemistry: Specimen: Serum
Trig: 0.9mmol/L (0.1-0.9)

* Preserved Glucose (FLOX) 7.8 mmol/L (3.3-6.7)

SERUM INDICES (Clear/+/++/+++)
Icterus index clear
Lipaemia index clear
Haemolysis index clear

mild Hyperglycaemia is likey stress induced ( I would agree- it took
me nearly an hour to get a sample on my own as he kept on moving just
at the wrong time-therefore what was supposed to be 2 hrs after a
feed, became 3 hrs)

- Total Thyroxine (T4) 9.6 nmol.L (15.0-74.0)


Low T4 in equines can suggest hypothyroidism: this is poorly
characterised in adult horses, but a congenital form is recognised in
foals. Low T4 may also be seen with non-thyroidal illness,
administration of phenylbutazone or corticosteriods, diets high in
energy,protein,zinc or copper or diets low in iodine,fasting or
ingestion of endophyte-infected pastures.

Any thoughts?

Jack is not on bute or steroids, I don't believe his diet is an issue-
I think I've got that under control after the help I have had from
the list- fasting? He was not locked up/has access to 3 acres-
stubble -not much- more dust than stubble/not green/ at night- low
This is the 1st time Jack has been tested & this is the protocol that
I intend to keep for any repeat bloods/ apart from getting help next
I will google endophyte to see what that is unless someone beats me
to it
Many Thanks
Pauline & Jack

Eleanor Kellon, VMD

--- In EquineCushings@..., "ponyjackpal" <takarri@...>

General Biochemistry: Specimen: Serum
Trig: 0.9mmol/L (0.1-0.9)

- Total Thyroxine (T4) 9.6 nmol.L (15.0-74.0)
A 7.8 (140) is more than a mild elevation, but the stress could
certainly do that. Upper end triglycerides is seen in IR. The stress
*might* also explain the T4 via the blood sugar. Meals that cause a
rise a blood sugar cause a drop in T4 in horses. Also, I never
published this but back when I was at New Bolton and looking at
thyroid hormone in racehorses that tie up, ACTH was a popular prerace
drug. I did an ACTH stimulation test on 10 horses and they all showed
depressed T4 levels for 24 hours after a single ACTH surge.

Do you have an insulin?