- Biomarkers
What your ferritin number really tells you about energy
Low iron stores are among the most common reasons people feel worn out. Here’s what the number means, and when to act on it.
As featured in
Most people hear about a problem at the yearly physical, once the easy window to act has already passed. Tinsdale moves that moment earlier.
Every result read by a physician
Licensed physicians across New England
1.4M+
Biomarkers measured
9k+
Members tested
95%
Would recommend Tinsdale

Tinsdale puts hospital-grade lab work together with physicians who take the time to explain it — so you catch trends early and make changes that stick.
CLIA-certified labs we audit
Results read by a physician
Plans that fit a busy week
Services
Choose one focused panel or the full picture. Every test comes with a home or in-lab draw, a physician’s read and a clear plan.
110+ biomarkers
The full yearly check — heart, liver, kidneys, thyroid, hormones and nutrients, all from one draw.
From $189
24 biomarkers
A full hormone profile for questions about energy, mood, sleep and fertility, with clear next steps.
From $139
32 biomarkers
Follow cholesterol, ApoB, blood sugar and inflammation years before they turn into a heart problem.
From $115
8 biomarkers
TSH, free T3, free T4 and antibodies — for tiredness, weight changes and hair loss.
From $75
18 biomarkers
Spot quiet shortfalls in vitamin D, B12, iron and magnesium that change how you feel each day.
From $85
Doctor + AI
Your numbers, turned into a personal plan for food, training, sleep and supplements.
From $45/mo
Why Tinsdale
A yearly physical checks a few numbers and sends you on your way. Tinsdale goes further, explains each result, and stays with you while you improve.
01
A licensed physician reads every panel and talks you through the parts that matter for you.
02
Quick turnaround from CLIA-certified labs, with a draw at home or at one of our Boston labs.
03
Specific changes to food, sleep, training and supplements, written around your results.
04
Retest during the year and watch your markers move in one clear dashboard.
What you get
Biomarkers tested
Time to results
A physician explains results
A personal action plan
Trends tracked over time
Home draws in Greater Boston
Clear prices, posted up front
150+
48 hours
Yearly physical
~20
1–2 weeks
Compared with a standard yearly physical and its routine blood work.
Our physicians
A board-certified physician reads every result, and you can book a follow-up call any time a question comes up.
15 yrs experience
Endocrinologist
MD · Hormones & metabolism
12 yrs experience
Internal Medicine
MD · Leads preventive care
18 yrs experience
Cardiologist
MD · Heart & lipid panels
10 yrs experience
Longevity Medicine
DO · Strength & recovery
Board-certified physicians
Licensed across New England
Follow-up calls at no charge
How it works
No crowded waiting room, no guessing. Most members get from booking to a physician-signed plan in under a week.
5 minutes
Step 01
Pick a panel and a time that works — at home, or at our Back Bay, Kendall or Brookline lab.
Day 1
Step 02
A certified phlebotomist takes one small blood sample, usually in under ten minutes.
Day 3
Step 03
Your results arrive within 48 hours, with a physician’s notes on what to focus on.
Ongoing
Step 04
Make the changes that matter, then retest and watch your markers move over time.
Before & after
Change you can see on paper, not only in how you feel. Flip between the first panel and the retest.

KM
Kevin M., 44
Full Body Panel + AI Wellness Plan
Health score
62
5 markers need attention
Same panel at the same lab, retested after six months on a physician’s plan.
Vitamin D
18 ng/mL
Low
Ferritin
22 ng/mL
Low
ApoB
118 mg/dL
High
HbA1c
5.9 %
Raised
hs-CRP
3.4 mg/L
High
Retested October 3, 2026
Next retest in 12 weeks

KM
Kevin M., 44
Full Body Panel + AI Wellness Plan
Health score
88
All markers in range
Same panel at the same lab, retested after six months on a physician’s plan.
Vitamin D
46 ng/mL
Optimal
Ferritin
68 ng/mL
Optimal
ApoB
82 mg/dL
Optimal
HbA1c
5.3 %
Optimal
hs-CRP
0.8 mg/L
Optimal
Retested October 3, 2026
Next retest in 12 weeks
Schedule
Lab hours
Mon – Fri
7am – 7pm
Saturday
7am – 3pm
Sunday
Home visits only
Lab draws
Consults
Movement & breath
Home visits
All times Eastern · updated weekly
7 – 10am
Fasting lab draw
Back Bay lab · walk-in
12:30 – 1pm
Doctor consult
Video call · 20 min
6 – 7pm
Yoga for hormone balance
Studio · all levels
7 – 10am
Fasting lab draw
Back Bay lab · walk-in
10:30 – 11am
Nutrition review
Video call · 30 min
5:30 – 6:15pm
Breathwork & recovery
Studio · 45 min
7 – 10am
Fasting lab draw
Back Bay lab · walk-in
1 – 1:30pm
Doctor consult
Video call · 20 min
6 – 7pm
Slow flow yoga
Studio · all levels
6:30 – 11am
Home draws
At your door · book ahead
11:30am – 12pm
Results walkthrough
Video call · 20 min
5:30 – 6:15pm
Breathwork & recovery
Studio · 45 min
7 – 10am
Fasting lab draw
Back Bay lab · walk-in
12:30 – 1pm
Doctor consult
Video call · 20 min
4 – 4:45pm
Longevity Q&A
Live online · free
7am – 3pm
Saturday lab draw
Back Bay lab · walk-in
10 – 11:15am
Community yoga
Studio · 75 min
9am – 1pm
Home draws
At your door · book ahead
Journal
Short guides from our physicians on biomarkers, hormones and daily habits — written to be read, not skimmed.
Low iron stores are among the most common reasons people feel worn out. Here’s what the number means, and when to act on it.
A plain-English guide to cortisol, thyroid, insulin, estrogen and testosterone, and how…
Why more cardiologists now look past basic cholesterol totals and count the…
Fasting, coffee, supplements and exercise: a short checklist so your results reflect…
FAQ
What people ask most about testing, results and plans. Tap any question to read the answer.
Our Boston care team answers messages within a few hours.