This sources-sought notice is for market research only to identify qualified vendors capable of supplying blood bank reagents for manual blood typing, serum antibody detection/identification, and crossmatching in the Transfusion Medicine Unit at the VA North Texas Health Care System in Dallas, Texas. The contemplated requirement includes estimated yearly reagent supplies such as ALBAcyte A1/A2/B cells, IgG sensitized cells, antibody ID panels, C3-coated red cells, and related items. The period of performance is a base year from 05/01/2027 through 04/30/2028, plus four option years through 04/30/2032. Vendors must be FDA-approved with documentation, have a defined quality plan and adequate supplies, and provide FOB Destination delivery as ordered. Capability statements will be used solely for acquisition planning to determine strategy; this notice does not constitute a solicitation or commitment to award.