{Reference Type}: Guideline {Title}: 'There is only one thing that is truly important in an IVF laboratory: everything' Cairo Consensus Guidelines on IVF Culture Conditions. {Author}: Consensus Group C; {Journal}: Reprod Biomed Online {Volume}: 40 {Issue}: 1 {Year}: Jan 2020 {Factor}: 4.567 {DOI}: 10.1016/j.rbmo.2019.10.003 {Abstract}: This proceedings report presents the outcomes from an international expert meeting to establish consensus guidelines on IVF culture conditions. Topics reviewed and discussed were: embryo culture - basic principles and interactions; temperature in the IVF laboratory; humidity in culture; carbon dioxide control and medium pH; oxygen tension for embryo culture; workstations - design and engineering; incubators - maintaining the culture environment; micromanipulation - maintaining a steady physcochemical environment; handling practices; assessment practices; culture media - buffering and pH, general composition and protein supplementation, sequential or single-step media for human embryo culture; use and management - cold chain and storage; test equipment - calibration and certification; and laboratory equipment and real-time monitoring. More than 50 consensus guideline points were established under these general headings.