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  • MDLB 1321
    ORDER OF DRAW

  • Culture
    Culture Bottle
  • SPS
    SPS
  • Lt. Blue
    Light Blue
  • Red
    PLAIN
  • SST
    SST
  • PST
    PST
  • Green
    Heparin
  • Lavender
    EDTA
  • Grey
    Grey

Grey

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POTASSIUM OXALATE & SODIUM FLUORIDE

SPECIMEN

CENTRIFUGE FOR PLASMA

DEPARTMENT

CHEMISTRY

COMMON TESTS

GLUCOSE
ALCOHOL

REASON FOR ORDER

Can affect chemistry and hematology tests so it is collected last.

HOW IT WORKS

Potassium Oxalate removes calcium by making it a salt.
Sodium Fluoride is an antiglycolytic agent that preserves glucose.

Mixing

MIXING

Requires immediate mixing.
5–10 gentle inversions.

SPECIAL CONSIDERATIONS

Not a common tube.
Plasma must be removed from cells after centrifugation to prevent the cells from metabolizing substances such as glucose.

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