INDEPENDENT AUDITORS' CONSENT
We consent to the incorporation by reference in this Registration
Statement of IGEN International, Inc. on Form S-3 of our report dated May 12,
2000 appearing in the Annual Report on Form 10-K of IGEN International, Inc. for
the year ended March 31, 2000 and to the reference to us under the heading
"Experts" in the Prospectus, which is part of this Registration Statement.
/s/ Deloitte & Touche LLP
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Deloitte & Touche LLP
McLean, Virginia
December 29, 2000
