Estriol, Serum
Test Mnemonic
ESTRIO
CPT Codes
- 82677 - QTY (1)
LOINC ®
2250-9
Performing Laboratory
ARUP
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Serum | SST (Gold) | Refrigerated | Patient gestational age required |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.6 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | After separation from cells: 72 hours |
| Refrigerated | After separation from cells: 2 weeks |
| Frozen | After separation from cells: 1 year (Avoid repeated freeze/thaw cycles) |
Days Performed
Sun - Sat
Turnaround Time
2 - 3 days
Methodology
| Name | Description |
|---|---|
| Chemiluminescence Immunoassay (CLIA) |
Reference Range
| Estriol | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Gestational age 25 weeks: 2.1 - 7.4 ng/mL | Gestational age 26 weeks: 2.2 - 8.0 ng/mL | Gestational age 27 - 29 weeks: 2.3 - 10.0 ng/mL | Gestational age 30 - 31 weeks: 2.7 - 11.7 ng/mL | Gestational age 32 - 37 weeks: 2.9 - 18.4 ng/mL | Nonpregnant female: < 0.20 ng/mL | Male: < 0.22 ng/mL |
Special Info
Patient gestational age required.
Clinical Info
Screening test for fetal aneuploidy in conjunction with other biomarkers and ultrasonography. Indicator of fetal well-being and placental function.