Understand your health. Know what to ask.
FSH at 43: why one blood test may not settle perimenopause
What FSH measures, when testing may help before 45, and why symptoms and menstrual history remain essential.
Read · 2 min →
Cortisol and DHEA-S: what their ratio can tell researchers
These adrenal hormones are studied in aging research. How that work differs from interpreting an individual blood test.
3 sources · PubMed / PMCRead · 2 min →
Full-body MRI vs. blood tests: different questions
MRI shows anatomy; blood tests measure selected substances and cells. Neither provides a complete health guarantee, and screening evidence matters.
5 sources · NIHRead · 2 min →
What a triglyceride-to-HDL ratio can and cannot tell you
Triglycerides and HDL help describe cardiovascular risk. Their ratio cannot diagnose insulin resistance or explain irregular periods on its own.
3 sources · NIH, Endocrine SocietyRead · 2 min →
Why preventive lab tests can matter before you feel unwell
Some health risks have no obvious symptoms. Preventive testing works best when each test has a reason and a follow-up plan.
3 sources · NIHRead · 2 min →
Feeling well: what a baseline health visit can still tell you
Blood pressure and selected blood tests can add information you cannot get from how strong or energetic you feel.
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Postpartum fatigue: what iron, B12 and thyroid tests can clarify
Postpartum fatigue can have more than one cause. Iron stores, B12, and thyroid function answer different questions when testing is warranted.
5 sources · NIHRead · 2 min →
Night shifts and lab timing: cortisol, TSH and glucose
Clock time, sleep timing and fasting status can affect interpretation. The right collection plan depends on the particular test and clinical question.
6 sources · NIH, PubMed / PMC, Endocrine SocietyRead · 2 min →
What to expect before labs are ordered at a first visit
A first visit should connect your health history to the tests being ordered. Here is what makes an intake and follow-up useful.
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Before a longevity panel: what makes a test useful?
An expanded panel is useful when its results answer a clear question. Here is how to assess the purpose, interpretation and follow-up.
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ApoB, Lp(a) and hs-CRP: three tests, different questions
ApoB reflects particle concentration, Lp(a) adds inherited risk information, and hs-CRP measures inflammation. How their roles differ.
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Your first blood draw when you work nights
Night work does not make blood tests unusable. A clear collection plan records sleep timing, fasting instructions, medicines and the purpose of each test.
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