Spin within two (2) hours of sample collection
Lt green plasma separator (PST)
Immediately following collection, mix sample by gently inverting 5 times
Gold serum separator (SST) tube
Refrigerated (preferred) - 7 days
Ambient - 7 days
Ion Selective Electrode - Indirect
Age | Range (mmol/L) |
0 - 7 days | 3.7 - 5.7 |
1 week - 1 year | 4.1 - 5.3 |
1 - 12 years | 3.4 - 4.7 |
Adult | 3.5 - 5.0 |
Low: < 2.8 mmol/L
High: > 6.0 mmol/L