What's the 2nd pre-op blood test for?

[sageandcoyesmommy 28]

I had a ton of blood tests a few weeks ago as one of my requirements before submitting the surgery request to the insurance company. Everything came back fine except my Vitamin D. They started me on supplements for that, said it wouldn't interfere with surgery, they'd just check it again in November. I got my surgery date for September 5th and now they are saying I need more bloodwork done on August 26th(a week and a half prior to surgery). Does anyone know what this is for? They'be already taken about 6 vials...what else could they possibly need? Lol. I was thinking maybe they're double-checking on platelets or other clotting factors, but if they were, wouldn't that be done the day or surgery or the day prior?

[Sheri h 18]

No the pt-inr before needs to be done out far enough so that if changes needs to be made that they have enough time to do it prior to surgery. I am on Coumadin and had to go off my Coumadin 5 days prior because blood would be to thin. I also had a small bowel obstruction 7 days later and they had to give me 6 units of plasma before they could do emergency surgery and 4 units of pack red blood after because I still bleed out more than they wanted after.

[sageandcoyesmommy 28]

Ohh okay. Wow that must have been scary!