Estriol, Serum
Ordering Recommendation
Screening test for fetal aneuploidy in conjunction with other biomarkers and ultrasonography. Indicator of fetal well-being and placental function.
Methodology
Quantitative Chemiluminescent Immunoassay
Performed
Sun-Sat
Reported
1-2 days
New York DOH Approval Status
Specimen Required
Serum Separator Tube (SST).
Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.6 mL)
Refrigerated.
Plasma.
Patient gestational age required.
After separation from cells: Ambient: 72 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
Reference Interval
Effective November 19, 2012
Based on gestational age: | |
---|---|
25 weeks | 1.9 - 6.7 ng/mL |
26 weeks | 2.0 - 7.3 ng/mL |
27 - 29 weeks | 2.1 - 9.1 ng/mL |
30 - 31 weeks | 2.4 - 10.6 ng/mL |
32 - 37 weeks | 2.6 - 16.7 ng/mL |
Nonpregnant Female | Less than 0.08 ng/mL |
Male | Less than 0.16 ng/mL |
Interpretive Data
FDA
Note
Hotline History
CPT Codes
82677
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
0070052 | Estriol, Serum | 2251-7 |
Aliases
- E3
- Estriol
- UE3
- Unconjugated Estriol