Order of Draw, Stopper Colors, and Rationale for Collection Order ( 1-8 )

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8 cards   |   Total Attempts: 185
  

Cards In This Set

Front Back
Blood Cultures
(sterile collection)
Yellow SPS
Sterile media bottles
Minimizes chance of microbial infection
Coagulation tubes
Light Blue
The first additive tube in the order because all other additive tubes affect coagulation tests
Glass nonadditive tubes
Red
Prevents contamination by additives in other tubes
Plastic clot activator tubes
Red
Serum Separator tubes (SSTs)
Red&Gray rubber
Gold plastic
Filled after coagulation tests because silica particles activate clotting and affect coagulation tests (carryover of silica into subsequent tubes can be overridden by anticoagulant in them).

Plasma separator tubes (PSTs)
Green/gray rubber
Light- green plastic
Heparin affects coagulation tests and interferes in collection of serum specimens; causes the least interference in tests other than coagulation tests
Heparin Tubes
Green
Same as #5
EDTA tubes
Lavender/pink
Plasma Preparation tubes (pearl) PPTs
Responsible for more carryover problems than any other additive:
elevates NA and K levels
Chelates and decreases calcium and iron levels
Elevates PT and PTT results.
Oxalate/fluoride tubes
gray
Sodium fluoride and potassium oxalate affect sodium and potassium levels respectively.
After hematology tubes because oxalate damages cell membranes and causes abnormal RBC morphology. Oxalate interferes in enzyme reactions.