October 7 is the 280th day of the year (281st in leap years). There are 85 days remaining.
October 6 - October 8 - September 7 - November 7 · more historical anniversaries
... vacutainers and test tubes. This chemical strongly and irreversably binds calcium. It is in a powdered form.
Citrate - this usually is in blue vacutainers. It is in liquid ...
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