Test Code LAB114 Potassium, Plasma or Serum

Reporting Title

Potassium

Roche Diagnostics, Ion-Selective Electrode (ISE) - RMH, BH, DH, DMH, GCMH, GMC, GMH, HMH, MGH, MH, OBH, PMH, SH, WECC, SMC, VWH Core Laboratories

Useful in diagnosis and treatment of electrolyte imbalance.

OhioHealth Laboratory Services - RMH, BH, DH, DMH, GCMH, GMC, GMH, HMH, MGH, MH, OBH, PMH, SH, WECC, SMC and VWH Core Laboratories

Collection Instructions:

1. Serum and Plasma gel tubes should be centrifuged within 2 hours of collection.

2. Red-top tubes should be centrifuged and aliquoted within 2 hours of collection.

Submit only 1 of the following specimens:

Preferred:

Serum

Draw blood in a gold-top serum gel tube(s). (Hemolyzed specimen is not acceptable.) Spin down and send 1 mL of serum refrigerated.
Note:

1. A speckled-top serum gel tube (s) or a plain, red-top tube(s) is also acceptable.

2. Indicate serum on request form.

3. Label specimen appropriately (serum).

Roche Specimen Stability Information

Refrigerate/Ambient OK/Frozen OK

0-31 days: 3.7-5.9 mmol/L

32 days-1 year: 4.1-5.3 mmol/L

2-12 years: 3.4-4.7 mmol/L

≥13 years: 3.5-5.1 mmol/L

Critical values 0-31 days: <2.8 mmol/L or >6.5mmol/L >31 days: <2.8 mmol/L or >6.0 mmol/L

Alerting category: Always called within 1 hour

Monday through Sunday; Continuously

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