Code Test Description * Indicates send out test   T455 Free T3   Specimen 1 ml serum   Method RIA   Schedule 2–4 working days   Indication Evaluation of thyroid status in dogs.   Interpretive   Guidelines Levels may be low in dogs with hypothyroidism. Levels may be elevated slightly in euthyroid dogs with increased tissue metabolic demands, and are typically spuriously high or very high in dogs with T3 autoantibodies.   T460 Free T4 by Equilibrium Dialysis   Specimen 1 ml serum   Method Equilibrium Dialysis   Schedule 2–4 working days   Indication This is the preferred assay for differentiation of sick euthyroid dogs from dogs with hypothyroidism. This is the most sensitive test for diagnosing feline hyperthyroidism.   Interpretive   Guidelines Free T4 by dialysis is not affected by T4 autoantibodies. Free T4 by dialysis may be decreased in some sick euthyroid dogs. Cats: An elevated Free T4 by diasysis is consistent with hyperthyroidism, although a small percentage of euthyroid cats with other illnesses can have an elevated free T4.   S16345 Fructosamine   Specimen 1 ml serum, heparinized or EDTA plasma   Method Colorimetric   Schedule 1–2 working days   Indication To differentiate diabetes mellitus from other causes of hyperglycemia and to assess glycemic regulation in patients with diabetes.   Interpretive   Guidelines Elevated levels indicate uncontrolled or poorly controlled diabetes mellitus.   Comments Fructosamine concentrations must be interpreted in conjunction with clinical signs.   T145 GGT   Specimen 1 ml serum   Method Kinetic   Schedule Daily   Indication Liver disease   Interpretive   Guidelines Elevation may be due to intra or post-hepatic cholestasis or corticosteroid administration.   T820 Giardia Antigen   Specimen 2 g fresh feces   Method ELISA   Schedule 1–2 working days   Indication Evaluation of patients with vomiting and/or diarrhea.   Comments This test may be more sensitive than the zinc sulfate centrifugation/flotation test or direct IFA.   T150 Glucose   Specimen 1 ml serum or heparinized plasma (separated)   Method Hexokinase   Schedule Daily   Indication High levels associated with diabetes or stress. Low levels associated with seizures.   Interpretive   Guidelines High levels associated with diabetes and stress hyperglycemia. Low levels may be artifactual or associated with insulin overdose, insulinoma, hepatic failure, pregnancy toxemia, sepsis, Addison's disease or toy-breed hypoglycemia.   Comments Whole blood in red top tube may decrease results due to utilization of glucose by blood cells. Please send comments to the webmaster. ©1997-2008 Antech Diagnostics, Inc. Site design and maintenance by amesDesign.