Test Code K Potassium
Additional Codes
| EPIC | LAB4166 |
Clinical Significance
Potassium measurements are used in the diagnosis and treatment of hypokalemia (metabolic alkalosis/acidosis or the absence of acid-base disturbances), hyperkalemia (overadministration of potassium, acidosis, or crush injuries), renal failure, Addison's disesae or other diseases involving electrolyte imbalance.
Source: Roche Cobas ISE indirect Na-K-Cl for Gen.2 Method Sheet Version 5.0 2024-05
Methodology
Roche Cobas c503/c303
Sample Type
| Preferred Sample Type | |
|---|---|
| Light green top - Plasma | |
| Acceptable Sample Type(s) | |
|---|---|
| Dark green top - Plasma | |
| Yellow top - Serum | |
| Red top - Serum | |
Centrifuge: Yes
Specimen Minimum Volume
65 uL with insert cup
Specimen Stability
| Temperature | Time |
|---|---|
| Ambient (15-25°C) | 14 days |
| Refrigerated (2-8°C) (store) | 14 days |
| Frozen (-15 to -20°C) |
Separate plasma or serum from cells within 2 hours.
Reference Ranges
| Normal Range | |
|---|---|
| 3.5 - 5.1 mmol/L |
| Critical Values | |
|---|---|
| <2.6 mmol/L | |
| >6.4 mmol/L |
| Technical Range | |
|---|---|
| 1.5 - 10.0 mmol/L |
Rejection Criteria
| Hemolysis | Index >20 |
|---|---|
| Icterus | Index >60 |
| Lipemia | Index >2,000, ultracentrifuge |
Availability
| Performed | STAT |
|---|---|
| 24/7 | Yes |
Performing Laboratory
MultiCare Yakima Memorial Hospital Laboratory
MultiCare Cancer Care (NSL)
Lab Department
Chemistry
CPT Code
84132
LOINC
2823-3 Potassium [Moles/Vol]