Potassium K
| Method(s) | Ion Selective Electrode |
|---|---|
| Specimen Required | |
| Collect | One 5 mL gold (SST) top tube. Also acceptable: heparinized plasma. |
| Transport | 1 mL serum at 2-8ºC. |
| Remarks | See also entry for Plasma Potassium for use when plasma K is specifically requested in conjunction with or in place of serum K. |
| Stability | Refrigerated: 7 days; Frozen: 30 days |
| Schedule | Daily-24 hours per day |
| Billing Code | 1010051 |
| CPTCode | 84132 |
| Preferred Specimen Collection Device(s) | |
| Reference Interval | |
|
3.5 - 5.1 mmol/L |
|
