Barry Johnston shared a post  
3 yrs

This is unbelievable!!

3 yrs

She took this blood from a vaccinated patient and noticed that the flow significantly decreased when he was in the second tube.

When it was brought to the back of the lab 3 minutes later, this was the find!

It usually takes 30 minutes for blood to clot in an SST tube...not 3 minutes as noted.
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