I had blood work done by my gyno. I went to a blood testing place and they said the maximum I would have to pay is $10. A month later and I just received an email saying I owe $325 because insurance only covered $706. It's to late at night to call now and I am freaking out. Is it possible they made a mistake? They took my card info when I got t blood drawn and she said it would only be max $10 so the email says I will be charged $325 on that card.