The government intends to award a sole-source, bridge contract to current contract W81K0020P0036 which expires 30 September 2024, so that the follow-on contract can be properly solicited and awarded. This action became necessary when, during market research, confusion arose about the availability of these supplies through a mandatory source, DLA Troop Support, and caused an extensive delay in determining that, even though all required reagents are listed at that agency's website (thus prohibiting local contracting for these supplies), the reagents are not available and that in fact a local contract is necessary. See attached limited-source justification for further details.