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- Ordering Info
To view specimen requirements and codes please select your laboratory:
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1 mL serum
Note: For any patients for whom low estradiol levels are anticipated (e.g. males, pre-pubertal children and hypogonadal/post-menopausal females), the Quest Diagnostics Estradiol, Ultrasensitive, LC/MS/MS assay is recommended (test code 30289).
Note: Do not add on estradiol testing to a barrier gel specimen older than 72 hours. Estradiol binds to barrier gel causing decreased values.
Serum Separator Tube (SST®)
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 6 months
*Do not add estradiol testing to a barrier gel specimen older than 72 hours
Serum stored on barrier gel for more than 72 hours
|Quest Diagnostics - East Region|
Set up: Mon-Sat (Day shift); Report available: 3 days
|Follicular Phase||19-144 pg/mL|
|Luteal Phase||56-214 pg/mL|
Measuring the circulating levels of estradiol is important for assessing the ovarian function and monitoring follicular development for assisted reproduction protocols. Estradiol plays an essential role throughout the human menstrual cycle. Elevated estradiol levels in females may also result from primary or secondary ovarian hyperfunction. Very high estradiol levels are found during the induction of ovulation for assisted reproduction therapy or in pregnancy. Decreased estradiol levels in females may result from either lack of ovarian synthesis (primary ovarian hypofunction and menopause) or a lesion in the hypothalamus-pituitary axis (secondary ovarian hypofunction). Elevated estradiol levels in males may be due to increased aromatization of androgens, resulting in gynecomastia.
The Result and LOINC information listed below should not be used for electronic interface maintenance with Quest Diagnostics. Please contact the Quest Diagnostics Connectivity Help Desk for more information at 800-697-9302.NOTE: The codes listed in the table below are not orderable Test Codes.
|Result Name||LOINC Code||Component Name|
Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.
The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.
LOINC assignment is based on a combination of test attributes, including the method used by the performing laboratory. For tests not performed by Quest Diagnostics, codes are assigned by the performing laboratory.
* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.