PTT test high, will the doctor cancel my breast augmentation surgery?

Hello and thank you for your question.  An elevated PTT can increase the bleeding risk during surgery but when it comes to breast augmentation, there is also another concern.  Excessive bleeding may increase the risk of long term complications with your breast implants, such as capsular contracture.  So, even if the surgery went well and no excessive bleeding was appreciated, the extra blood that sits on your implant could cause complications down the road.  Talk to your surgeon.
Best,
Mark K Markarian, MD, MSPHHarvard-trained Aesthetic Plastic Surgeon

A high PTT could put you at risk for increased bleeding during surgery. Good idea to re-check it. A "little" high may be of "little" concern, and hopefully with the re-check it will come out normal. If not, not a bad idea to have a hematologist evaluate you to clear you for surgery.I hope this helps.- Dr. Bryson Richards 

Once you get your second PTT results back I would let your PS now if it is out of range. He/she will be able to tell you if surgery will be postponed or if they are willing to do a medication and continue with surgery or not. Safe is always the best way to be. 
I wish you the best of luck!