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HelpTest Code ESTD Estradiol
Performing Laboratory
Hunterdon Medical Center Laboratory
Useful For
- Assessment of ovarian status, including follicle development for assisted reproduction protocols.
- Establishing time of ovulation and optimal time for conception.
Special Instructions
The limit of quantitation for estradiol measured by immunoassay is 25 pg/mL. Mass spectrometry is the preferred method for measurement of low serum estradiol concentrations in children, males and postmenopausal females.
Specimen Requirements
| Container/Tube | |
| Acceptable | PST (Li Hep) Gel- Mint Green Top |
| Acceptable | SST |
| Specimen Volume | 3.0 mL |
| Minimum Volume | 1.0 mL |
Specimen Type
Plasma/Serum
Specimen Transport Temperature
Ambient
Specimen Stability
| Specimen | Temperature | Time Frame |
| Plasma | Refrigerated 2-8°C | 2 days |
| Serum-gel tube | Refrigerated 2-8°C | 2 days |
Updated June 2020
Day(s) Test Set up
Monday Through Sunday
Reference Values
| Criteria | Reference Values | Units |
| Menstruating Female | ||
| Follicular Phase | 12-233 | pg/mL |
| Ovulation Phase | 41-398 | pg/mL |
| Luteal Phase | 22-341 | pg/mL |
| Postmenopausal Female | <50 | pg/mL |
| Pregnancy | ||
| 1st trimester | 154-3243 | pg/mL |
| 2nd trimester | 1561-21280 | pg/mL |
| 3rd trimester | 8525->30000 | pg/mL |
| Male | 11-43 | pg/mL |
Methodology
ECLIA: Electrochemiluminescence immunoassay
CPT Code
82670
Loinc Code
2243-4