| pg/ml | ng/L | |
| C-terminal & | ||
| midmolecule | ||
| Serum | ||
| 1-16 yr: | 51-217 | 51-217 |
| Adults: | 50-330 | 50-330 |
| Plasma (EDTA): | ||
| N-Terminal: | ||
| Serum | ||
| 2-13 yr: | 14-21 | 14-21 |
| Adult: | 8-24 | 8-24 |
| Intact molecule: | ||
| Serum | ||
| Cord: | ||
| 2-20 yr: | 9-52 | 9-52 |
| Adults: | 10-65 | 10-65 |
| Plasma (EDTA): | 1.0-5.0 pmol/L |