Tietz NW. Clinical guide to laboratory tests. 4e editie, Saunders Company, Missouri, 2006, ISBN 0-7216-7975-7.
| 0d - 10d | 1.90 - 2.60 | mmol/l |
| 10d - 2j | 2.25 - 2.75 | mmol/l |
| 2j - 12j | 2.20 - 2.70 | mmol/l |
| 12j - 18j | 2.10 - 2.55 | mmol/l |
| 18j - 60j | 2.15 - 2.50 | mmol/l |
| 60j - 90j | 2.20 - 2.55 | mmol/l |
| > 90j | 2.05 - 2.40 | mmol/l |