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This report describes the hydrogen content measurements of yttrium samples as irradiated at Advanced Test Reactor as part of the Microreactor Program. Irradiated samples were prepared at the facilities of Analytical Research Laboratory (ARL) of Materials and Fuels Complex (MFC). Hydrogen content measurements were performed on reduced size specimens using an inert gas fusion analyzer. From a single specimen, replicate samples were prepared and tested. Uncertainty analyses were conducted using two approaches to determine the hydrogen content variations in the samples. The hydrogen content of irradiated specimens was both lower and higher than the expected values, indicating stoichiometry variations. Hydrogen was detected in all samples, including the cracked capsule's specimens. Results also suggested the potential presence of hydrogen redistribution between samples inside the capsules.