Clinical Chemistry Reagents · Electrolytes
Potassium – Single Reagent
Diagnostic reagent for the in-vitro quantitative determination of potassium in human serum and plasma on manual systems.
| Range | Clinical Chemistry Reagents — Electrolytes |
|---|---|
| Method | End-point |
| Type of specimen | Serum is recommended. Specimens for serum potassium analysis should be free from haemolysis, since the high concentration of potassium released from red cells significantly increases the serum levels and this invalidates the test results. Blood specimens should also be separated from the red cells shortly after collection to prevent any leakage of potassium from the intracellular into the extracellular fluid. Plasma from anticoagulants not containing potassium is also suitable (potassium-free heparin). Potassium in serum is stable for at least 2 weeks at 2–8 °C. |
| Storage | Ready to use. Stable until the expiry date on the label at 2–8 °C. Do not use if turbid. The remaining stability after opening the bottles is 1 month at 18–25 °C. |
| Catalogue numbers | 4 |
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