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Once you have a PDF file saved to your local computer, it can be emailed as attachment in an encrypted emailmessage or by SM (secure message) in PnC. See how to encrypt an email here.
From the Lab Specimens page (PncChart (1) > Patient/Client tab (2) > Lab Specimen (3)), left click on the order. In the menu that opens, left click the "Print ^" button (4), click Reprint Order (5).
Choose "Save as PDF" (1) as the Destination and "Save" (2).
Choose a destination and filename. You can use the "Desktop". I recommend being consistent so you can locate files easily. 
The Lab Specimen PDF will look like this: