A dedicated high-statistics measurement of the ${}^{71}\mathrm{Ge}$ half-life is found to be in accurate agreement with an accepted value of $11.43\pm 0.03$ d, eliminating a recently proposed route to bypass the “gallium anomaly” affecting several neutrino experiments. Our data also severely constrain the possibility of ${}^{71}\mathrm{Ge}$ decay to low-energy excited levels of the ${}^{71}\mathrm{Ga}$ daughter nucleus as a solution to this puzzle. Additional unpublished measurements of this decay are discussed. Following the incorporation of this information, the gallium anomaly survives with high statistical significance.

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• Beta decay
• Electron & muon capture
• Neutrino oscillations
• Solar neutrinos
• Sterile neutrinos
• 59 ≤ A ≤ 89