X0202 4 2008-03-25 0001022079 QUEST DIAGNOSTICS INC DGX 0001222676 HAGEMANN ROBERT C/O QUEST DIAGNOSTICS INCORPORATED 3 GIRALDA FARMS MADISON NJ 07940 0 1 0 0 SVP & Chief Financial Officer Common Stock 2008-03-25 4 A 0 4600 0 A 91441 D Common Stock 1720 I 401k/SDCP Stock issued by Quest Diagnostics Incorporated in settlement of a performance share award dated January 1, 2006, approved in accordance with the requirements of Rule 16b-3(d). These underlying shares were acquired on a periodic basis by the trustee of the Company's tax qualified Profit Sharing (401(k) and/or Supplemental Deferred Compensation Plan. The information was obtained from the plan administrator as of a recent date. The number of shares is based on the account balance of the Company stock fund under the plan (which includes some money market instruments) divided by the market price of the Company's stock as of that date. Certain of these shares are subject to restrictions on transfer and/or certain other terms contained in the underlying stock agreements and related plan document. In addition, certain of the underlying shares were acquired on a periodic basis by the administrator of the Company's Employee Stock Purchase Plan. The number of shares in the Plan was provided by the administrator of the Plan as of a current date. William J. O'Shaughnessy, Jr., atty-in-fact for Robert A. Hagemann 2008-03-27