Your Annual Physical Is in the Fall. Start Preparing Now

Your physical is on the calendar. October, maybe November, whenever the practice could fit you in.

You'll be in that room for about fifteen minutes. Someone will draw your blood and take your blood pressure, and a few days later a message lands in your portal with the word "normal" next to numbers you have never seen before.

Then nothing changes.

That isn't your doctor's fault, and it isn't yours. The visit is short, the standard panel is narrow, and nobody mentions that the part you control happens before you walk in.

You have eight to twelve weeks. Let's talk about what's already happening in your bloodwork, and how to use that time.

Your Labs Are Already Being Written

Most people picture a blood draw as a snapshot of that morning. Some of it is. Much of it isn't.

Hemoglobin A1c is the clearest example. Glucose attaches to the hemoglobin inside your red blood cells, and those cells live roughly three months before your body replaces them. Your A1c is a weighted average of the last two to three months of blood sugar, and the most recent weeks count the most.

The test has already started. You are inside the window right now.

Vitamin D runs on a different clock, and this is where the calendar matters. Your skin makes vitamin D from summer sun at a high angle. Across the northern half of the country, that window closes in the fall and doesn't reopen until spring.

So a level drawn in late summer or early fall is the best number you will see all year. It's your peak. If it comes back marginal now, it will be lower in February.

Ferritin, which reflects your iron stores, has its own catch. Ferritin rises with inflammation. Drawn after a hard race or during a sinus infection, it can read falsely reassuring and hide a real deficiency.

None of this is a trick. Each number describes a window of time, and you get some say over which window.

Why "Normal" Isn't the Answer You Wanted

A reference range is built from the people who got tested, not from the people still hiking at 75. Landing inside the range at 48 means you don't have a diagnosable disease today. It doesn't say which direction you're traveling.

I want to be clear about that difference, because it's the whole point. One value is a dot. The same value across three years is a line. The line is the information.

What frustrates me is how rarely that line gets drawn. Your results are scattered across two health systems and a lab you used once in 2023. Nobody is watching your ferritin drift down over four years. Nobody mentions that your fasting glucose has climbed every year and is still technically fine.

This matters for ordinary things. Carrying your own groceries at 70. Driving yourself. Taking stairs without planning your day around them.

You lose roughly 3 to 8 percent of your muscle mass per decade after 40 unless you train against it. That drift is decided by years of small decisions, not by one appointment in the fall.

The One Thing to Do This Week

Call the office and ask a single question. Can the lab order be placed now, so you can do the blood draw a week or two before the visit?

This changes the appointment. Results already in the chart mean those fifteen minutes get spent discussing them. Blood drawn the same day means a portal message instead of a conversation, and the questions wait another year.

Some tests also need prior authorization. Better to learn that in August than in the exam room.

Arrive With a Question, Not a Feeling

Your job is not to diagnose yourself. Your job is to be specific.

"I've been tired" gives your physician almost nothing to work with. It's like taking your car in and saying it makes a noise sometimes.

So take ten minutes this week and write down what actually changed this year, with dates. Sleep quality since spring. Hair in the drain since your dose went up in June. Recovery taking two days instead of one since March. Strength going down while the scale also went down.

Bring the three that matter most on one page. Hand it over at the start of the visit, not in the parking lot afterward.

The Panel Worth Asking About

A standard physical usually covers a metabolic panel, a CBC, and a lipid panel. That's a reasonable floor, not a complete picture. If you're in your 40s or 50s, or you're on a GLP-1, ask your physician whether these belong in your workup too:

• Hemoglobin A1c, fasting glucose, and fasting insulin
• Ferritin, not just hemoglobin
• Vitamin D (25-hydroxyvitamin D) and B12
• TSH and free T4
• Magnesium, ideally RBC magnesium, and zinc if your intake is low
• hs-CRP
• ApoB or non-HDL cholesterol alongside the standard lipids
• Total and free testosterone with SHBG, drawn in the morning

Ask, don't demand. Your physician decides what fits your history and what your coverage allows. But a specific request gets a real answer, and "can you check everything" doesn't.

The Week Before the Draw

Small things distort numbers you're paying for.

Fast for 10 to 12 hours, water only, and don't skip the water. Dehydration concentrates your blood and can shift your hemoglobin, sodium, and kidney markers.

Leave alcohol alone for 48 to 72 hours. It moves triglycerides and liver enzymes more than most people expect.

Skip your hardest training session for 48 hours beforehand. Intense exercise raises creatine kinase and can push liver enzymes up in a way that looks like a problem it isn't.

Stop biotin for 3 to 5 days. Biotin sits in most hair, skin, and nail supplements, and at higher doses it interferes with common lab immunoassays, including thyroid testing. It's the one I catch most often.

And don't clean up your eating for the week beforehand. I see this constantly. You'll get numbers describing a version of you who doesn't exist, and then we're both making decisions about a stranger.

What About Supplements?

Don't start a new stack in September to improve an October panel. You'll only blur the picture.

If you already take vitamin D, keep taking it and say so. A normal level on 2,000 to 4,000 IU daily means something very different from a normal level on nothing.

Bring the actual bottles, or photos of the labels, with doses. "A multivitamin and some magnesium" is not a supplement list.

But no supplement replaces a well-timed draw and a clear question.

When This Isn't Appointment Prep

Some things don't wait for October. Chest pressure, new shortness of breath, unexplained weight loss, blood in your stool or urine, a new lump, fainting, a severe or unfamiliar headache. Those are calls to your physician today.

Every decision about a medication, a dose, or a referral is your physician's. I don't diagnose and I don't prescribe. What I do is make sure you walk in with the right questions and walk out knowing what to do with the answers.

What to Do With the Results

Ask for a copy of every result, every year, and keep them in one place. A folder on a laptop counts.

When we sit down with a panel, we're not hunting for one bad number. We're reading direction, against how you sleep, what you eat, and what you can lift. A ferritin of 30 means one thing in a woman who feels great and something else in a woman whose hair is thinning.

That context is what fifteen minutes can't give you.

The Bottom Line

You don't need to do all of this. If you do one thing this week, call the office about drawing your blood early. Everything else gets easier once the results are in the room with you.

An annual physical isn't a grade. It's one of the few times each year you get objective data about a body you plan to live in for another 30 or 40 years. Most people waste it, not because they don't care, but because nobody told them the appointment starts in August.

If you want help turning this year's results into an actual plan, that's what my free 30-minute strategy call is for. Bring your labs and your questions.

You deserve more than the word "normal."

Emily