Estriol, Serum
Test Summary
The placenta converts DHEA-S, produced by the fetal adrenals, to Estriol and other estrogens. Estriol is useful in assessing the fetal adrenals and placenta during pregnancy. More commonly, Estriol is one of the maternal serum biochemical markers used to screen for common chromosomal trisomies, especially Down syndrome.
Aliases
- N/A
Specimen Collection
Special Instructions
N/A
Preferred Specimen
0.5 mL serum collected in a red-top tube (no-gel)
Minimum Volume
0.3 mL
Instructions
N/A
Patient Preparation
N/A
Storage
N/A
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
- Room temperature: 5 days
- Refrigerated: 7 days
- Frozen: 28 days
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
Serum separator tube (SST®)
Order Code
ESTRL
EPIC (Premier) Code
LAB173
Includes
N/A
CPT Code
- 82677
Billing Code
- 670281
CPT Statement
Methodology
Chromatography/Mass Spectrometry
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. The FDA has determined that such clearance or approval is not necessary. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Physician Attestation of Informed Consent
N/A
Testing Laboratory
Quest Diagnostics Nichols Institute
33608 Ortega Highway
San Juan Capistrano CA, 92675
33608 Ortega Highway
San Juan Capistrano CA, 92675
Department
Reference Testing
Reference Range
| Adult Males | ≤0.18 ng/mL | ||
| Adult Females (non-pregnant) | ≤0.21 ng/mL | ||
| Pregnancy | |||
| First Trimester | ≤2.50 ng/mL | ||
| Second Trimester | ≤9.60 ng/mL | ||
| Third Trimester | ≤14.60 ng/mL |
Setup Schedule / Expected Turnaround Time
Sunday - Friday; Report available: 3 - 5 days
Specimen Collection
Special Instructions
N/A
Preferred Specimen
0.5 mL serum collected in a red-top tube (no-gel)
Minimum Volume
0.3 mL
Instructions
N/A
Patient Preparation
N/A
Storage
N/A
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
- Room temperature: 5 days
- Refrigerated: 7 days
- Frozen: 28 days
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
Serum separator tube (SST®)
Result Information
Methodology
Chromatography/Mass Spectrometry
Testing Laboratory
N/A
Reference Range
| Adult Males | ≤0.18 ng/mL | ||
| Adult Females (non-pregnant) | ≤0.21 ng/mL | ||
| Pregnancy | |||
| First Trimester | ≤2.50 ng/mL | ||
| Second Trimester | ≤9.60 ng/mL | ||
| Third Trimester | ≤14.60 ng/mL |
Setup Schedule / Expected Turnaround Time
Sunday - Friday; Report available: 3 - 5 days