I am just putting this out there... I sell medical supplies and there is a National possibly international backorder situation with BLUE blood drawing tubes. The mfg's are out of stock and can't keep up with the demand. What do these do, they test for clots. Something is up with this, my guess it is the vaccine causing clots and no one is talking about it except people who are asking for them.. WHAT is going on. Watch the signs for any loved ones who got jabbed!