**Exhibit 31.1**

 

**CHIEF EXECUTIVE OFFICER CERTIFICATION**

 

 

I, Marc D. Grodman, ChiefExecutive Officer of Bio-Reference Laboratories, Inc. (the “Company”) do herebycertify that:

 

(1)           I have reviewed this annual report on Form 10-K of the Company for thefiscal year ended October 31, 2003

 

(2)           Based on my knowledge, this annual report does not contain any untruestatement of a material fact or omit to state a material fact necessary inorder to make the statements made, in light of the circumstances under which suchstatements were made, not misleading with respect to the period covered by thisquarterly report;

 

(3)           Based on my knowledge, the financial statements and other financialinformation included in this quarterly report, fairly present in all materialrespects, the financial condition, results of operations and cash flows of theCompany as of, and for, the period presented in this quarterly report;

 

(4)           The Company’s other certifying officer and I are responsible forestablishing and maintaining disclosure controls and procedures (as defined inExchange Act Rules 13a-14 and 15d-14) for the Company and we have:

 

(a)           designedsuch disclosure controls and procedures to ensure that material informationrelating to the Company, including its consolidated subsidiaries, is made knownto us by others within those entities, particularly during the period in whichthis quarterly report was being prepared;

 

(b)           evaluatedthe effectiveness of the Company’s disclosure controls and procedures as of adate within 90 days prior to the filing date of this quarterly report (the“Evaluation Date”); and

 

(c)           presentedin this quarterly report our conclusions about the effectiveness of thedisclosure controls and procedures based on our evaluation as of the EvaluationDate;

 

(5)           The Company’s other certifying officer and I have disclosed, based onour most recent evaluation, to the Company’s auditors and the audit committeeof the Company’s board of directors:

 

(a)           allsignificant deficiencies in the design or operation of internal controls whichcould adversely affect the Company’s ability to record, process, summarize andreport financial data and have identified for the Company’s auditors anymaterial weaknesses in internal controls; and

 

(b)           anyfraud, whether or not material, that involves management or other employees whohave a significant role in the Company’s internal controls; and

 

(6)           The Company’s other certifying officer and I have indicated in thisquarterly report whether or not there were significant changes in internalcontrols or in other factors that could significantly affect internal controlssubsequent to the date of our most recent evaluation, including any correctiveactions with regard to significant deficiencies and material weaknesses.

 
| Dated:  January  28, 2004 |                              |
|-------------------------------------|-----------------------------------|
|                                |                              |
|                                | /S/ Marc D. Grodman               |   |
|                                | Marc  D. Grodman                  |
|                                | Chief  Executive Officer          |
|                                | Bio-Reference  Laboratories, Inc. |

 

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