Copeptin
Information taken from Newcastle website: The Brahms CT-proAVP assay measures the C-terminal precursor fragment of arginine vasopressin (AVP), otherwise known as copeptin. Copeptin is released on an equimolar basis with AVP and therefore measurement of serum/plasma copeptin provides a surrogate measure of AVP concentrations. Clinical indication for requesting: differential diagnosis of polyuria / polydipsia syndromes. Copeptin measurements are of most value when taken under an osmotic stimulus.
| Tube | 01 (SE) - Serum Gel |
|---|---|
| ID | Tests&Tubes0175 |
| Additional Information | **Only available to Endocrinology. Requests should be discussed with the Duty Biochemist, 0113 39 26922, option 2** Please include clinical details and concurrent osmolality with all requests. |
| Turn Around | Turnaround time stated by Newcastle: 4 weeks. |
| Send to | Blood Sciences LGI (Test referred to: Newcastle Royal Victoria Infirmary.) |
| Contact | For further details please contact Leeds Pathology customer services: leedsth-tr.pathologycustomerservice@nhs.net. |
| Advice | Full information on all referred tests can be found on the referred tests information database, EQMS reference BSF2REC17003. |
| Collection Con | Instructions to lab: Centrifuge sample, separate serum and store in fridge. EDTA plasma or lithium heparin plasma also acceptable. Minimum volume: 1 mL serum/plasma. |
| Sample REQ | Blood |
| Ref. Range Notes | No single reference range is applicable as copeptin varies according to plasma osmolality in normal individuals. An interpretive comment will be included with each report. |
| Telepath | COPT1R. LGI Superset LCOPT adds SA1R. SJUH Superset JCOPT adds JCHM1L |
| ICE Codes | LCOPT / JCOPT |
