Her finner du en tabell som viser stabilitetsdata for utvalgte serumkomponenter.
Sist oppdatert: 25.05.2021
Biaskriterium er basert på biologisk variasjon, innen et individ og mellom individer. Den prosentvise forskjellen mellom ferske og langtidslagrede prøver må ikke avvike mer enn tillatt bias dersom man skal kunne angi forskjellen som ubetydelig.
Med ny teknologi kan Janusmaterialet brukes i genetiske studier. For eksempel har vi vist at miRNA og DNA i prøvene er av god nok kvalitet til å gjøre sekvenseringsanalyser.
| Type of variable | Component | Percent difference between fresh and long-term stored samples | Bias criteria | Comments | web link |
| Biochemical component | Sodium | + 3.9 | 0.3 | Sublimation | link |
| Potassium | + 26.4 | 1.8 | Leakage of potassium due to prolonged clotting time | link | |
| Calcium | + 7.4 | 0.8 | Instable | link | |
| Bilirubin | ̶ 59.4 | 10.0 | Light sensitive, instable | link | |
| Creatinine | ̶ 1.2 | 3.4 | Stable | link | |
| Uric acid | ̶ 7.6 | 4.8 | Relatively stable | link | |
| Iron | + 4.0 | 8.8 | Stable | link | |
| Metyl malonic acid | 0 | NA | Stable | link | |
| Homocystein | + 4.4 | 7.7 | Stable | link | |
| Proteins | Albumin | ̶ 1.9 | 1.3 | Stable | link |
| Ferritin | ̶ 18.5 | 5.0 | Instable | link | |
| Transferrin | + 8.2 | 1.3 | Instable | link | |
| Sex hormone binding globulin | + 7.1 | 11.1 | Stable | link | |
| Alanin aminotransferase | ̶ 73.4 | 12.0 | Instable | link | |
| Aspartat aminotrasferase | + 2.0 | 5.4 | Stable | link | |
| Creatinin kinase | ̶ 96.1 | 11.5 | Instable | link | |
| Immunoglobulin E | + 4.3 | NA | Stable | link | |
| Immunoglobulin G | + 1.0 | 4.3 | Stable | link | |
| Cystatin C | ̶ 3.3 | 3.4 | Stable | link | |
| Vitamins | Folate | ̶ 69.9 | 11.2 | Light sensitive, instable | link |
| Vitamin B12 | + 8.9 | 8.0 | Stable | link | |
| Hormones | Testosterone | + 24.4 | 5.8 | Possible changes in background population | link |
| Follicle stimulating hormon | + 4.6 | 5.1 | Stable | link | |
| Luteinizing hormone | + 1.9 | 7.8 | Stable | link | |
| Prolactin | ̶ 33.5 | 15.4 | Instable | link | |
| Thyroidea stimulating hormon | ̶ 13.2 | 8.4 | Instable | link | |
| Free Thyroxine | + 3.5 | 3.4 | Stable | link | |
| Lipids and lipoproteins | Cholesterol | + 5.6 | 4.1 | Stable, possible changes in the background population | link |
| High density lipoprotein cholesterol | ̶ 69.2 | 5.2 | Instable | link | |
| Low density lipoprotein cholesterol | + 31.3 | 6.8 | Stable | link | |
| Apoprotein A1 | + 12.0 | 3.7 | Stable | link | |
| Apoprotein B | + 22.3 | 6.0 | Stable | link | |
| Nucleic acids | DNA | NA | NA | Stable | link |
| miRNA | NA | NA | Stable | link |
