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HelpTEST ID K POTASSIUM
Performing Laboratory
NRLS-Core Chemistry
Specimen Type
Plasma/Serum
Specimen Required
Container/Tube:
Preferred: Lithium Heparin (Mint)
Acceptable: Serum gel, Tiger top, Red top, Sodium Heparin (dark green)
Specimen Volume: 1.0 mL
Collection Instructions:
Plasma gel tubes should be centrifuged within 2 hours of collection. 4 hours is acceptable.
Serum gel tubes should be fully clotted and centrifuged within 2 hours of collection. 4 hours is acceptable.
Red-top tubes should be fully clotted, centrifuged and aliquoted within 2 hours of collection.4 hours is acceptable.
Specimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Plasma/Serum | Refrigerated(preferred) | 1 week |
| Ambient | 8 hours | |
| Frozen | Indefinite |
Reflex Testing
Potassium with a value less than or equal to 3.0 mmol/L will reflex a Magnesium.
| Reporting Name | Always Performed |
|---|---|
| Magnesium | No |
Reference Values
An interpretive report will be provided