T4 or T-4 may refer to: Heathrow Terminal 4. Tiyas Military Airbase, also known as the T-4 Airbase. T4 phage, a bacteriophage. Thyroxine (T4), a form of thyroid hormone. the T4 spinal nerve. the fourth thoracic vertebrae of the vertebral column. A non-small cell lung carcinoma staging for a type of tumour.

In this article, we outline the normal T4 levels in adults and children. We also list some potential causes and symptoms of changes in these levels and outline treatment options.

The NVIDIA® T4 GPU accelerates diverse cloud workloads, including high-performance computing, deep learning training and inference, machine learning, data analytics, and graphics.