Test Search for AHDC Clients Species Keyword Test Type Lab Section All Species Amphibian Avian Bovine Camelid Canine Caprine Cervidae Equine Feline Ferret Fish Mammal Other Ovine Porcine Primate Reptile All Test Types Infectious Non-Infectious All Lab Sections Anatomic Pathology Avian Diagnostics Bacteriology Brucellosis Clinical Pathology Comparative Coagulation Endocrinology Molecular Diagnostics Parasitology Quality Milk Production Services Referral Serology Toxicology Vet Support Services Virology Each accession received will be charged a $5.00 accessioning fee, in addition to the requested testing. Fees are subject to change without notice, please call the lab if you have any questions. Contract pricing available. For information please refer to the contract billing page. All test turnaround times are listed in business days and do not include Saturdays, Sundays or holidays. T4 (Thyroxine) - Immulite - T4I Sample Details: 1 mL serum or heparinized plasma Cost/Fee: $15.00 Comment: For more information, see Appendix C Details Reference Ranges Test Interpretations Lab Section: Endocrinology Description: Min Sample Volume: 0.75 mL Collection Container: plastic or glass tube Coolant: Refrigerate. Ship in insulated container with ice pack. Test Target: Test Days: M-F Test Turnaround (business days): 1-3 days SpeciesSexTestReference Value Bovine T4 Baseline 4 - 10 ug/dl Camelid T4 Baseline 5 - 12 ug/dl Equine T4 Baseline 0.85 - 2.40 ug/dl Caprine T4 Baseline 3.5 - 8.0 ug/dl Equidae T4 Baseline 0-85 - 2.40 ug/dl Canine T4 Baseline 1.5 - 3.0 ug/dl Feline T4 Baseline 2.0 - 5.0 ug/dl T4 BASELINE TEST The concentration of T4 in serum or plasma is within the reference value for normal healthy animals. The concentration of T4 is low or undetectable in hypothyroid animals. Clinically hypothyroid dogs with unexpectedly high T4 concentrations may have autoantibodies against thyroid hormones. The thyroglobulin autoantibody test is suggested in these cases. Hyperthyroid cats will generally have high or high normal T4 results. Free T4 by dialysis can be used to verify borderline results. Horses often have low T4 levels secondary to EMS or PPID. Animals on anti-inflammatories, antibiotics or with chronic illness may have falsely decreased total T4. Animals given supplements containing kelp may have elevated results and show clinical signs of hyperthyroidism. Treatment is best monitored with a 4 to 6 hour post treatment T4 level, except for dogs with positive autoantibody tests which should be monitored using free T4 by dialysis. For further interpretation please see the interpretation on our webpage at: https://ahdc.vet.cornell.edu/Sects/Endo/caninetestinfo.cfm or https://ahdc.vet.cornell.edu/Sects/Endo/equinetestinfo.cfm or https://ahdc.vet.cornell.edu/Sects/Endo/felinetestinfo.cfm print See Supplies for diagnostic supplies and shipping materials to meet your specimen needs. See QMPS Supplies Order Form for additional Quality Milk supplies and materials. See Shipping Instructions for packaging and labeling instructions and regulations.