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The sensitive estradiol test uses a liquid chromatography–mass spectrometry (LC-MS) methodology which allows better detection at the lower limits of the range compared to regular immunoassay estradiol test. The LC-MS estradiol test is primarily suggested for situations with very low estrogen levels. It can also be used to monitor E2 levels in both men and woman and may be more accurate compared to immunoassays of estradiol; however, Life Extension® has found the majority of customers do not need this more costly test to get adequate information from the regular immunoassay estradiol test.
Fasting is not required for this test. Take all medications as prescribed. If you are supplementing with any hormones, we suggest taking them approximately 2 hours prior to having your blood drawn to see peak levels. Hormones are best drawn between 8-10 AM. Hormonal contraceptives can interfere with progesterone and estrogen results.
Pre-menopausal women: For a 28 day cycle, blood should be drawn on day 21 (day 1 is the day that bleeding begins). For longer or shorter cycles, count 8 days back from the day your next menstruation would start.
Post-menopausal women: Blood can be drawn any day of the month.
The laboratory services are for informational purposes only. It is not the intention of National Diagnostics, Inc and Life Extension to provide specific medical advice but rather to provide users with information to better understand their health. Specific medical advice including diagnosis and treatment will not be provided. Always seek the advice of a trained health professional for medical advice, diagnosis or treatment.
Both the physician and the testing laboratory are independent contractors with whom National Diagnostics, Inc makes arrangements for your blood tests. Neither National Diagnostics, Inc or Life Extension will be liable for any acts or omissions of the physician, the testing laboratory, or their agents or employees.
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