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THE VELRI LIBRARY

Understand your health. Know what to ask.

Guides to treatments, lab results and common health questions. Sources are listed in every article.

Biomarkers & Labs

38 guides · Page 3 of 4
Biomarkers & Labs

Telehealth or an in-person visit: choosing a starting point

The right visit format depends on what needs to be assessed. Compare scope, examinations, testing, and follow-up as well as travel time.

Read · 2 min →
Biomarkers & Labs

Biological age tests: what the number can tell you

Biological age is an estimate built from selected markers. How it differs from calendar age and why a lower score is not proof of longer life.

3 sources · FDA, NIHRead · 2 min →
Biomarkers & Labs

How to compare telehealth services before sharing your labs

Compare telehealth follow-up, lab review, privacy and in-person care before choosing a service.

Read · 2 min →
Biomarkers & Labs

Vitamin D tests and bone density: what each can tell you

A vitamin D blood test and a bone density scan measure different things. Postpartum weight changes do not automatically mean both are needed.

2 sources · NIHRead · 2 min →
Biomarkers & Labs

Postpartum weight changes: where thyroid testing fits

Postpartum thyroid symptoms can overlap with recovery. Learn what thyroid tests answer and why cortisol is not a general stress score.

4 sources · NIH, Endocrine SocietyRead · 2 min →
Biomarkers & Labs

Irregular periods before 40: how ovarian insufficiency is evaluated

FSH, estradiol and menstrual history have different roles in evaluating ovarian insufficiency. Repeat FSH is needed when the diagnosis remains uncertain.

Read · 2 min →
Biomarkers & Labs

Irregular periods, weight and PCOS: which findings establish the diagnosis?

Body size and an insulin number do not diagnose PCOS. How reproductive features and glucose assessment answer different questions.

2 sources · NIHRead · 2 min →
Biomarkers & Labs

Comparing telehealth services: what to verify before you book

Check who provides care, how follow-up works, what the service costs and when an in-person visit may be needed.

3 sources · FDARead · 2 min →
Biomarkers & Labs

How to read a flagged or normal lab result

High, low, and normal flags need context. Start with the test, its units, the lab’s reference range, and what the result changes.

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Biomarkers & Labs

What a first blood-test panel measures

A baseline panel records selected measurements at one point in time. What common tests include and how to prepare for the results conversation.

Read · 2 min →
Biomarkers & Labs

What is in a baseline blood panel? Start with the test list

“Baseline panel” has no single universal test list. Learn what common blood tests measure and what a panel cannot tell you.

4 sources · NIHRead · 2 min →
Biomarkers & Labs

How to evaluate a longevity test panel

A longevity panel may mix familiar tests with experimental scores. Separate what is measured from what the result can help you decide.

4 sources · FDA, NIHRead · 2 min →