In Chart, you can delete any of a patient's laboratory orders and the attached results as needed.
Note: Accessing a patient's lab orders to delete an order requires the "Manage Lab Tests" security right.
To delete a lab order
With a patient selected in Chart, do one of the following:
Click
the Orders button 
on the toolbar.
On the File menu, click Orders.
If applicable, do one of the following:
If the Password - Manage Lab Tests dialog box appears, user verification has been assigned to the "Manage Lab Tests" task. Do one of the following:
If your user account has been granted the "Manage Lab Tests" security right, enter your credentials in the User ID and Password boxes, and then click OK.
If your user account has not been granted the "Manage Lab Tests" security right, have a user with permission temporarily override this restriction so you can manage lab orders this one time. The overriding user enters his or her credentials in the User ID and Password boxes and then clicks OK.
If a message appears, informing you that you do not have rights to this operation, your user account has not been granted the "Manage Lab Tests" security right. To have a user with permission temporarily override this restriction so you can manage lab orders this one time, do the following:
On the message, click Yes.
In the Password - Manage Lab Tests dialog box, the overriding user enters his or her credentials in the User ID and Password boxes and then clicks OK.
The Orders dialog box appears.
Under Orders, select an existing lab order. The results, if any, that are attached to the order appear on the right.
Click Delete Order.
A confirmation message appears.
Click Yes.