Potassium
| Abbrev Code: | K | ||
| Order Code: | LAB114 | Order Name: | Potassium |
| Order Instructions: | Order KW for whole blood specimens. | ||
| Synonyms: | Electrolytes | ||
| Methodology: | Roche: Indirect ion selective electrode
Vista: Indirect potentiometric Woodwinds: ISE, diluted |
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| CPT Codes: | 84132 x1, 84132 x1 | ||
| Turnaround Time: | Performed and reported 24 hours/day. | ||
| Associated Links: | |||
Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | 2.5 mL |
| Minimum\Peds Volume: | 0.6 mL |
| Collection Instructions: | Chemistry Tests Containers Chart
Samples from patients with extremely high WBC may have falsely high potassium because of in-vitro cytolysis (pseudohyperkalemia). If suspected, samples should be hand-carried to the laboratory and analyzed as whole blood to minimize mechanical damage to cells. Consider collecting in red no gel to eliminate cells traveling through gel barrier. |
Processing and Shipping
| Specimen Processing: | Centrifuge and aliquot 1.25 mL, 0.1 mL minimum. Store in refrigerator. |
| Shipping Instructions: | Ship at refrigerated temperature. |
| Stability: | 14 days refrigerated; indefinitely frozen. |
| Test Performed at or Referral Lab | Chemistry (CSC Maple Grove, Grand Itasca, Northland, Oxboro Clinic, Range, Roche-CSC Mpls, Roche-Lakes, Roche-Ridges, Roche-St. John's, Roche-UMMC East, Southdale, UMMC/UMMCH-West Bank, Woodwinds) |
Interpretive
| Critical Range: | Basic, Electrolyte and Renal Panels Critical Values and Reference Ranges |
| Reference Range: | Basic, Electrolyte and Renal Panels Critical Values and Reference Ranges |
| Limitations: | Refer to Electrolyte Panel for limitations. |
| Use: | Evaluate potassium metabolism. |
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