The analysis of well-testing pressure data obtained under radial flow conditions at a well producing a gas condensate reservoir is considered. The producing conditions are such that liquid condenses and becomes mobile in the vicinity of the well. We present new approximate theoretical solutions for drawdown and buildup in terms of the Al-Hussainy et al.(1) single-phase real-gas pseudopressure function. Based on these solutions, we present new analysis techniques using the single-phase pseudopressure function.