CORTISOL
Cortisol, Serum or Plasma
EPIC Test Procedure Code: LAB2084
Performing Lab:
Saint Luke's Regional Laboratories
Container Type:
Serum gel tube or green top (heparin) tube
Specimen Type:
Serum or plasma
Preferred Volume:
2 mL
Minimum Volume:
0.5 mL
Collection Procedure:
1. Morning (8 a.m.) and afternoon (4 p.m.) specimens are preferred.
2. Indicate the specimen type on the request form.
3. Label the specimen appropriately.
Store and Transport:
Room Temperature: < 12 hours
Refrigerated: > 12 hours
Refrigerated: > 12 hours
CPT Codes:
82533 - Cortisol (EAP 30011780)
Test Schedule:
Monday through Sunday
Reference Ranges:
AM:
5.27 - 22.45
ug/dL
PM:
3.44 - 16.76
ug/dL
Notes:
Levels peak at 8 a.m. and fall to trough levels at approximately 10 p.m.
High serum biotin levels may interfere with this assay and result in a false elevation in values. A repeat test 24 – 48 hours after stopping oral biotin may be requested.