What does TT4 stand for?

MLA style: "TT4." Acronym Finder . 2012. AcronymFinder.com 2 Jun. 2012 http://www.acronymfinder.com/Total-T4-Levels-(veterinary)-(TT4).html
Chicago style: Acronym Finder . S.v. "TT4." Retrieved June 2 2012 from http://www.acronymfinder.com/Total-T4-Levels-(veterinary)-(TT4).html
APA style: TT4. (n.d.) Acronym Finder. (2012). Retrieved June 2 2012 from http://www.acronymfinder.com/Total-T4-Levels-(veterinary)-(TT4).html

Total T4 Levels (veterinary)

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Truncated Tetrahedron Dielectric Resonator Antenna Tunable Transmitter, Fixed-Tuned Receiver Table Top-Ground Power Test Set Time-Triggered Real Time Object Tunable Transmitter, Tunable Receiver Test Time / Total Development Time Ratio Token-Tray/Weighted Queuing Time Tyrosinaemia Type 1 Total Therapy 3 Total Triiodothyronine (hormone research)		Ta Ta for Now Transparent Testa 5 Transparent Testa 6 Treatment Table 6 (US Navy) Tactical Terminal Adapter Tactical Terrain Analyzer Tailored Training Approach Talking to Americans (Canadian TV show) Teacher Training Agency (UK) Technical Task Agreement