01
Listen
A two-hour intake. History before hypothesis. We map the questions before we order the panel.
Trajectory Medicine · Toronto
Precision.
Guided by biology.
A physician-led practice for individuals who measure what matters. We listen to your biology, intervene with restraint, and track the trajectory — over years, not appointments.
- CPSO Licensed
- PIPEDA Compliant
- Evidence-Calibrated
- Physician-Led
02 · Recognition
Archetype A
You have built the career.
The body is the unfinished variable.
Your annual physical comes back "within range." The number is fine. The trajectory is not. You have noticed it before anyone else.
Archetype B
You have read the literature.
You require a physician who has read more.
You are not looking for protocols from a podcast. You are looking for a clinician who will tell you, honestly, what the evidence does and does not yet support.
03 · The Public Gap
Public medicine is built to keep you alive. It is not built to keep you capable. The system measures disease. It does not measure trajectory. By the time a value moves out of range, a decade of signal has already passed unread. Signal Longevity exists in that gap — a private, physician-led practice for the years when intervention is still quiet, and still possible.
04 · The Signal Method
Four movements.
Repeated, indefinitely.
The method is not a program. It is a loop — designed to compound information over decades, not deliver outcomes over weeks.
02
Measure
Comprehensive panels, imaging, functional metrics. We measure the variables that move trajectory, not the ones that fit on a single page.
03
Intervene
The minimum effective intervention. Tier-graded by evidence. Never more than what the data supports.
04
Track
Re-measure at 90 days. Adjust. Re-measure at 180. The loop is the practice. The trajectory is the outcome.
Trajectory Snapshot
The numbers behind the narrative.
We measure what changes, what doesn't, and what should. Illustrative composite — your dashboard reflects your biology.
Biological vs Chronological Age
37.5/ 44.0
−6.5 yrs
BiologicalChronological24 months
Sleep Quality
87
+12
HRV · Recovery
64ms
+18%
Composite illustration · Not patient data
05 · The Physician
MDFRCPCMSc Clinical Epi
Dr. Elena Marchetti
Founding Physician · Internal Medicine
I trained in internal medicine because I wanted to read the body whole. I built Signal because the system rewards reading it late. My work is to listen earlier, measure with restraint, and stay with a patient long enough to see the trajectory bend.
✓ Verified — College of Physicians and Surgeons of Ontario
NPBScNCert. Functional Med
Hana Okafor, NP
Lead Nurse Practitioner · Patient Care
Hana runs the daily arc of patient care — the cadence between measurements, the small adjustments between visits, the human continuity that makes a long horizon liveable. Every patient has her on speed-dial.
06 · A Different Standard
What we do
differently.
Dimension
Elsewhere
Signal
Dimension
Initial visit
Elsewhere
10–15 minutes
Signal
120 minutes
Dimension
Panel scope
Elsewhere
Standard CBC / lipids
Signal
Comprehensive trajectory panel
Dimension
Reference frame
Elsewhere
Population reference range
Signal
Personal trajectory over time
Dimension
Intervention threshold
Elsewhere
Disease diagnosed
Signal
Signal observed
Dimension
Follow-up cadence
Elsewhere
Annual or symptomatic
Signal
90-day re-measurement loop
Dimension
Physician continuity
Elsewhere
Variable
Signal
Single physician, indefinitely
07 · Patient Outcomes
Measured.
Not embellished.
Patient identifiers anonymized per PIPEDA. Outcomes reflect individual trajectories; results vary.
Metric improvement
ApoB ↓ 38% over 9 months
Metabolic52 · M
"I had been told my numbers were 'fine' for fifteen years. Signal was the first practice to tell me what fine actually meant for my trajectory — and what it did not."— M.R.
08 · The Cost of Waiting
The most expensive decision
is the one deferred.
Trajectory is compounding. The intervention that is quiet at 45 is rarely available at 60. The window for restoration narrows; the window for preservation closes earlier still.
This is not urgency. It is arithmetic.
09 · Inquiry
A single point
of contact.
Leave an email. We respond personally within two business days with next steps and a copy of our clinical philosophy. No marketing sequence.