Immediatley following collection, mix sample by gently inverting 5 times
Frozen (preferred) - 14 days
Ambient - 1 day
Refrigerated - 14 days
Gross hemolysis, gross lipemia, specimen received at room temperature greater than 24 hours
Electrochemiluminescent
| Age | Range (ng/mL) | Median (ng/mL) |
| Male | ||
| Birth - 6 years | 32.77−262.69 | 124.58 |
| 7 - 10 years | 45.26−191.34 | 92.52 |
| 20 - 98 years | 0.11−13.07 | 4.95 |
| Female | ||
| 0 - 6 years | 0.53−7.78 | 2.85 |
| 7 - 19 years | 1.05−12.86 | 5.23 |
| 20 - 25 years | 1.23−11.51 | 4.7 |
| 26 - 30 years | 1.03−11.10 | 4.2 |
| 31 - 35 years | 0.66−8.75 | 3 |
| 36 - 40 years | 0.42−8.34 | 1.69 |
| 41 - 46 years | 0.26−5.81 | 0.58 |
| 47 - 54 years | ≤ 0.82 | < 0.03 |
| 55 - 97 years | ≤ 0.18 | < 0.03 |