estrogen-metabolites-profile-urine estrogen-metabolites-profile-urine
Estrogen Metabolites Profile; urine Estrogen Metabolites Profile; urine Estrogen Metabolites Profile; urine

Estrogen Metabolites Profile; urine

The Estrogen Metabolites Profile provides a detailed insight into estrone, estradiol, estriol, metabolism, as well as the efficiency of COMT (methylation activity). This non-invasive test requires only 4 or 5 separate urine collections. Because the breakdown of hormones relies so heavily on processes within the liver, this test can also elucidate areas of interest as it pertains to conjugation of each metabolite. Additionally, testing urinary hormone metabolites can contribute to further understanding of endogenous hormone secretion, supplemental hormone utilization, enzyme activity, oxidative stress, and insight into whether your body is safely metabolizing hormones.

This profile is a consideration for baseline or follow up testing for patients with concerns that are particular to estrogens and/or monitoring for harmful metabolites due to the influence of HRT/BHRT. Patient FAQs and Best Practices for HuMap


Useful for:

  • Female
  • Menopausal symptoms
  • Breast health
  • Endometriosis
  • PCOS
  • Male
  • Breast health
  • Prostate health
  • Erectile dysfunction
  • General
  • Metabolic syndrome
  • Thyroid pathologies
  • Inflammation
  • Mood concerns
  • Family history of hormone-driven cancers
  • HRT/BHRT utilization
  • Weight gain

Turnaround Time

5 to 7 days

Note: Turnaround times on results are an estimate and are not guaranteed. The lab may need additional time due to holidays, confirmation/repeat testing, etc. You can contact us to discuss when your results should be ready.

Analytes Tested

Click any analyte name for additional clinical information, including reference ranges, specimen collection, stability and rejection criteria.

List price applies when filing with insurance or Medicare, or when billing a patient directly. Prompt payment pricing applies when billing to a physician account or prepayment is received with the test.

Doctor's Data offers profiles containing multiple analytes. *Multiple analytes may be billed under a single CPT code. Many analytes can be ordered individually. Pricing may vary. Click on a specific analyte for more information or read our detailed billing and payment policies.

The CPT codes listed on our website are for informational purposes only. This information is our interpretation of CPT coding requirements and may not necessarily be correct. You are advised to consult the CPT Coding Manual published by the American Medical Association. Doctor's Data, Inc. takes no responsibility for billing errors due to your use of any CPT information from our website.

Sign in at the top of any page to view pricing and order tests. Or click here to create an account. You may also contact us for assistance placing an order.

Detailed Information

Evaluation of the estrogen metabolism pathway relies on understanding several key steps of metabolism: the amount of parent estrogens, hydroxylation of E1 and E2, methylation of hydroxy estrogens, and the function of key enzymes.

Unconjugated Estrogens:

Unconjugated estrogens are the main steroid hormones estrone (E1), estradiol (E2), and estriol (E3). In females, these hormones are primarily produced in and excreted from the ovaries, with a smaller percentage coming from the adrenal glands and conversion in peripheral tissues. In males, adrenal and peripheral production is primary, with a small amount produced in the testes. The amount of unconjugated estrogens is important as this will determine the starting pool for further metabolism.

Hydroxylation of Estrogens:

Phase I metabolism is essentially the addition of a reactive hydroxyl group to the 2 and 4 positions of estrone and estradiol and the 16 position of estrone. These estrogens make up what is known as the catechol estrogens. 2-OH E1 and 2-OH E2 are the primary metabolites of the estrogens and are thought to be “safe” due to their low potencies, association with cell differentiation, high clearance rate, and anti-cancer properties compared to the 4-OH pathway metabolites. The 4-OH pathway implies higher risk as these metabolites can generate a large amount of free radical and DNA damage compared to the 2-OH pathway. 16-OH E1 is considered the most “estrogenic” of the metabolites as it has also been shown to play a role in genotoxic reactions. However, once hydroxylated to estriol, it is rendered a non-proliferative / protective estrogen. The ratio of 2OHE1 to 16a-OHE1 can provide a marker for breast health and cancer risk with a lower 2OHE1 to 16a-OHE1 ratio shown to correlate with higher cancer risk in post-menopausal women.

When evaluating phase 1 metabolism, comparison of the percentages of 2, 4, and 16 hydroxy metabolites may elucidate which pathways are preferred. Understanding this can be helpful in choosing the appropriate treatments.

Methylation of Hydroxy Estrogens:

Phase II detoxification of 2-OH and 4-OH metabolites via Catechol-o-Methyl Transferase (COMT) creates 2-M E1/E2 and 4-M E1/E2. Methyl metabolites are harmless and, in this form, can be rapidly excreted in the urine. If methylation pathways are inadequate due to low levels of COMT or cofactors necessary for methylation, the 2-OH and 4-OH metabolites can travel down a more metabolically dangerous pathway leading to oxidation and the potential for the formation of highly reactive quinones. Estrogen quinones, especially the 4-quinone of E1 and E2, are highly reactive and can bind to DNA to form adducts that can lead to permanent mutations in DNA.

The ratio of 4-M E1/E2 to 4-OH E1 / 2 and 2-M E1/E2 to 2-OH E1/E2 can help determine if adequate methylation of catechol estrogens is occurring. The higher the ratio, the higher the likelihood of metabolizing toward the less harmful pathway of methylation and therefore less reactive quinone formation. Even if 4-OH metabolites are elevated, adequate methylation means these metabolites are being detoxified rendering them less harmful.