Exhibit 23
Consent of Independent Registered Public Accounting Firm
We consent to the incorporation by reference in the Registration Statements (Forms S-3 No. 333-42188, No. 333-107134, No. 333-108086, No. 333-112006, and No. 333-121050; Forms S-8 No. 333-109017, No. 333-38868, No. 333-95269, No. 333-81009, No. 333-56037, No. 333-56071, No. 033-65069, No. 033-60795, No. 333-115691 and No. 333-115688) of Nabi Biopharmaceuticals and in the related Prospectus of our reports dated March 8, 2005, with respect to the consolidated financial statements and schedule of Nabi Biopharmaceuticals, Nabi Biopharmaceuticals management’s assessment of the effectiveness of internal control over financial reporting, and the effectiveness of internal control over financial reporting of Nabi Biopharmaceuticals, included in this Annual Report (Form 10-K) for the year ended December 25, 2004.
| /s/ Ernst & Young LLP |
| Certified Public Accountants |
West Palm Beach, Florida
March 8, 2005