Abstract: An assembly includes a medical package defining a housing configured to receive a medical supply. The medical package comprises a first sealable region and a second sealable region. The first and second sealable regions are configured to be sealed together to secure the medical supply within the housing. The medical package includes a thermal pattern configured to exhibit a first visible indicium indicative of an unsealed region between the first and second sealable regions. The thermal pattern is configured to irreversibly transform to a second visible indicium indicative of a sealed region between the first and second sealable regions in response to exposure to a temperature greater than or equal to a first temperature threshold, and to a third visible indicium indicative of a sterilized stage of the medical package in response to exposure to a temperature greater than or equal to a second temperature threshold.