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Test Code K Potassium

Specimen Type

Blood

Preferred Collection Container

GRN-PST

Collection Volume

5 mL

Minimum Collection Volume

0.6 mL in a Green microtainer

Collection Instructions

Avoid very small needles if possible. Avoid stasis, avoid use of tourniquet, avoid hand-clenching if possible. Avoid potassium-containing tubes such as potassium oxalate.

Rejection Criteria

Specimen not centrifuged within 2 hours of collection; Hemolysis, specimens drawn in lavender top tube

Specimen Storage and Stability

Stable up to 7 days at 2-8 C

Turn Around Time

Routine – 8 hours; STAT – 40 minutes

Lab Department

Chemistry

Alias

Potassium, Serum; K+; K, Blood;

EPIC Code

LAB114

Acceptable Collection Container

GRN-PST, SST, R-NoGel, G-NoGel

Testing Volume

0.2 mL (200 ul)

Day(s) and Time(s) Performed

Monday through Sunday, 24 hours