Patient & Visitor Alert: Because flu cases are on the rise, starting February 24, children 12 and younger
will be restricted from visiting hospitals and certain inpatient facilities throughout Carolinas HealthCare System. Learn more.

Carolinas HealthCare System
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FAQs for Chemistry and Toxicology

One of the tubes does not have enough blood. Can blood be added from another tube?
No. The additives in the tubes cannot be mixed or combined. Some of the additives are very specific for certain tests and can cause erroneous results if used for other tests.