TEF Labs

TEF Labs, officially known as Texas Fluorescence Laboratories, is a biotechnology company that specializes in the design and manufacture of high-performance fluorescent indicators and molecular probes. The company was founded in 1993 by Dr. Akwasi Minta, who previously collaborated with Nobel laureate Roger Tsien on the development of foundational calcium indicators. TEF Labs provides a wide range of high-purity reagents for measuring intracellular concentrations of ions such as calcium, sodium, potassium, and magnesium, as well as pH indicators. Their products, including popular dyes like Fura-2 and Fluo-4, are essential tools for researchers in neuroscience, cardiology, and cell biology. In addition to its catalog of standard probes, the company offers custom synthesis and specialized indicators for near-membrane imaging and other advanced microscopy applications.