Osteocalcin, N-MID
Test Code
16322
83937
Clinical Significance
Osteocalcin, N-MID - Osteocalcin, the most abundant non-collagen protein in bone matrix, is a bone-specific, calcium binding protein. Serum osteocalcin levels are related to the rate of bone turnover in various disorders of bone metabolism, e.g., osteoporosis, primary and secondary hyperparathyroidism, and Paget's disease.
Test Resources
Test Details
Dietary supplements containing biotin may interfere in assays and may skew results to be either falsely high or falsely low. For patients receiving the recommended daily doses of biotin, draw samples at least 8 hours following the last biotin supplementation. For patients on mega-doses of biotin supplements, draw samples at least 72 hours following the last biotin supplementation.
Methodology
Electrochemiluminescence Immunoassay (ECLIA)
Reference Range(s)
| Male (ng/mL) |
Female (ng/mL) |
|
| 0-4 Years | Not established | Not established |
| 5-9 Years | 47-142 | 47-142 |
| 10-13 Years | 49-167 | 49-167 |
| 14-17 Years | 26-203 | 14-85 |
| >17 Years | 9-38 | 8-32 |
Preferred Specimen(s)
1 mL serum
Minimum Volume
0.5 mL
Collection Instructions
Allow blood to clot at room temperature (20-26° C) and centrifuge immediately to separate the serum from the cells. Freeze as soon as possible.
Transport Container
Transport tube
Transport Temperature
Frozen
Specimen Stability
- Room temperature: Unacceptable
- Refrigerated: 24 hours
- Frozen 21 days
Reject Criteria
Hemolysis • Heat inactivated specimens • Specimens stabilized with azide • Patient administered with biotin within 8 hours
Setup Schedule
1 mL serum
0.5 mL
Allow blood to clot at room temperature (20-26° C) and centrifuge immediately to separate the serum from the cells. Freeze as soon as possible.
Transport tube
Frozen
Room temperature: Unacceptable
Refrigerated: 24 hours
Frozen 21 days
Refrigerated: 24 hours
Frozen 21 days
Hemolysis • Heat inactivated specimens • Specimens stabilized with azide • Patient administered with biotin within 8 hours