The ZRT Laboratory Blog

The ZRT Blog is an extensive resource for patients and health care providers searching for health and hormone testing information. Here, you can read about ZRT’s cutting edge research, advances in testing, wellness advice, and health industry highlights.

Dr. Sherry LaBeck

Sherry LaBeck, ND is a Clinical Consultant at ZRT Laboratory.

Recent Posts

Guide for Interpreting Testing Levels for Hormone Contraceptive Users

Posted by Dr. Sherry LaBeck on Friday, 11 March


Interpretation of hormone testing using saliva, dried blood spot, or serum can be tricky when women are using oral, patch, or other hormonal contraception methods.

The types of hormones in these contraceptives are synthetic, and although they may be close to the molecular structure of our body's own estradiol or progesterone, they are not bioidentical. While bioidentical hormones used as supplements react in the same way as our endogenous hormones to the specific antibodies used during hormone testing, non-bioidentical hormones aren’t recognized by these antibodies so they are not measured by the same test.

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New Oregon Law Allows Women to Bypass Physicians for Contraceptives

Posted by Dr. Sherry LaBeck on Thursday, 28 January

ThinkstockPhotos-471089136.jpgFrom the time menses begins, to the time it ceases, a woman must make decisions that affect her fertility. Whether it's viewed as a gift, a curse or just a responsibility, a woman’s right to choose when, how and if a pregnancy occurs is a relatively new experience.

Over the last 50 years a woman's access to birth control methods, whether oral, patch, or IUD, has greatly increased. However, such a prescription usually requires a visit to a doctor along with a pelvic exam.

Oregon House Bill 2879 has changed this as of January 2016. Under the new law, women can bypass their physicians and go straight to their local pharmacist for an oral or patch contraceptive prescription.

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How to Use a Symptom Checklist to Choose a Hormone Test

Posted by Dr. Sherry LaBeck on Tuesday, 12 May

ThinkstockPhotos-495589925Symptoms of hormonal imbalance can often be challenging to assess.

Is your patient exhibiting signs of estrogen dominance because her estrogen is too high or is it due to the progesterone being too low?

Is his fatigue because he’s not making enough testosterone or that his adrenal glands are working over-time?

Are her imbalanced sex steroids the cause of her depression or is it the low thyroid hormone?

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The Phenomenon of Vitamin D

Posted by Dr. Sherry LaBeck on Monday, 12 January


155036913-597007-editedEarly in the 20th century, research in the nutritional arena was blossoming. Scientists were swiftly realizing that the nutritional requirements to "support life, growth and reproduction" in both animals and humans were more than simply proteins, carbohydrates, fats and minerals, as commonly believed. And, all scientists working in the field knew that this missing knowledge was key to relieving a host of common afflictions.

In 1912 one scientist, Casimir Funk, isolated a substance found in the hulls of rice that cured beriberi, a nutritional disease linked to thiamine (B1) deficiency. From this revelation, he theorized that other diet-related ailments such as pellagra, scurvy and rickets could also be a consequence of deficiencies of yet unidentified substances. He further hypothesized that these substances would have the same basic property of a protein, and called them "vital amines" or "vitamines" Later this term was embraced (with the ‘e’ omitted) and became a major focus of nutritional research for the next 30 years, yielding discovery after discovery of essential nutrients.

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