additive tubes in this order:

 SST (red-gray or gold top) - Contains a gel separator and clot activator.

 Sodium heparin (dark green top)

 PST (light green top). Contains lithium heparin anticoagulant

 EDTA (lavender top)

 ACDA or ACDB (pale yellow top)

 Oxalate/fluoride (light gray top)

NOTE: Tubes with additives must be thoroughly mixed. Erroneous test results may be obtained when the

blood is not thoroughly mixed with the additive.

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Clinical chem lab (anticoagulants and pipettes)

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