Services  /  Vitamins & Minerals

18 biomarkers

Vitamins & Minerals

Spot quiet shortfalls in vitamin D, B12, iron and magnesium that change how you feel each day.

From $85

Results in 48 hours

A farmers market stall full of fresh vegetables

Nutrient gaps are common, inexpensive to find and usually easy to fix. Low ferritin alone explains much of the tiredness people blame on a long New England winter.

Beyond the deficiency line

We report against optimal ranges, not only the cutoff where a clinic would call something a deficiency, because the gap between the two is where most symptoms sit.

If a supplement makes sense, you get a dose and a retest date instead of a cabinet full of guesses.

What’s included

Vitamin D

Vitamin B12

Folate

Ferritin & iron studies

Magnesium

Zinc

From $85

18 biomarkers

Turnaround

Results in 48 hours

Sample

One blood draw

Preparation

No fasting needed

Best for

Low energy, plant-based diets and poor sleep

Same-day slots at 120+ draw sites.

Keep exploring

Still deciding which panel fits?

Our care team will look at your history and suggest the right test, with no charge and no pressure.

FAQ

Questions,
answered.

What people ask most about testing, results and plans. Tap any question to read the answer.

Still have questions?

Our Boston care team answers messages within a few hours.

How is Tinsdale different from my yearly physical?

A routine physical looks at about 20 markers. Tinsdale runs 150+ biomarkers, and a licensed physician goes through every result with you and turns it into a clear, personal plan.

Do I need to fast before my blood test?

For most panels, yes: nothing but water for 8–10 hours first. Water actually makes the draw easier. Your exact prep notes arrive with your booking.

How soon will I get my results?

Most results are back within 48 hours of your sample reaching the lab, and we notify you as soon as your physician-signed report is ready.

Can I collect my sample at home?

Yes. Book a home visit anywhere inside I-495 and a certified phlebotomist comes to you, or walk in at one of our three labs.

Is my health data private and secure?

Yes. Your data is encrypted, kept on HIPAA-compliant systems and never sold, and you choose who gets to see your results.

Does insurance cover Tinsdale?

Tinsdale is direct-pay with prices posted up front. Many members pay with HSA or FSA funds, and we send an itemized receipt for reimbursement.