- Adults tracking healthy aging or rehabilitation
- Athletes establishing a repeatable performance baseline
- People with weakness, falls or loss of function under professional guidance
Useful in context
TEST PASSPORT · REVIEWED JULY 2026
Grip strength + functional capacity
Measure capability: strength, power, balance and mobility—not just appearance.Grip dynamometry, sit-to-stand, gait speed and balance tests can track function. Technique and reference population matter, and a single score is never a diagnosis.
ACCESSAt homePhysical performance
TURNAROUNDImmediateProvider and location dependent
RELATIVE COST$–$$Total downstream cost matters
COMMERCE STATUSPartner readyValidated dynamometer + guided test protocol
HOW TO USE THIS PAGE
Decide whether this test deserves a place in your plan.
- 01Confirm the question
Be clear about what decision the result would change before ordering.
- 02Check fit and preparation
Review who it helps, who should pause and how to protect the quality of the signal.
- 03Plan the response
Know what you will do with a normal, abnormal or unclear result.
01 / WHO SHOULD TAKE IT
Fit the test to
the person.
Testing is useful when the result can change a real decision. These are educational selection criteria, not a diagnosis or personal order.- Competing with internet norms using different devices or protocols
- Maximal testing through pain or acute injury
02 / SIGNAL VS. STORY
What it tells you.
What it cannot.
01
Repeatable force output
02
Lower-body function and power proxies
03
Balance and mobility limitations
01
Device, hand size, technique and motivation affect results
02
Population norms differ
03
Function tests do not identify the medical cause of weakness
03 / MARKERS + RANGES
Read the panel
without chasing flags.
The report should show its own method, units and laboratory reference interval. Clinical decision thresholds may be different from a lab interval. We do not invent a universal “optimal” range where authoritative guidance does not support one.Use the laboratory unit and method, then interpret with symptoms, trend and the decision this marker can change.
Use the laboratory unit and method, then interpret with symptoms, trend and the decision this marker can change.
Use the laboratory unit and method, then interpret with symptoms, trend and the decision this marker can change.
Use the laboratory unit and method, then interpret with symptoms, trend and the decision this marker can change.
Use the laboratory unit and method, then interpret with symptoms, trend and the decision this marker can change.
Use the laboratory unit and method, then interpret with symptoms, trend and the decision this marker can change.
MEN, WOMEN + LIFE-STAGE CONTEXT
The correct range is personal context—not pink versus blue numbers.
Where biology differs, we call it out. Clinical interpretation should also reflect organs present, hormone therapy, pregnancy, age, medications and health history.
Use age-, size- and sex-context norms; menopause and bone health may influence test selection and loading.
Use age-, size- and sex-context norms; high absolute strength does not remove the need to assess balance and aerobic function.
04 / PREPARATION
Protect the quality
of the signal.
The best assay cannot rescue the wrong timing, wrong specimen or wrong question. Follow the ordering clinician and laboratory instructions when they differ from this general guide.Use the same device, position, warm-up and attempt count.
Use support and supervision when balance or fall risk is present.
Stop if pain, dizziness or neurologic symptoms appear.
REPEAT CADENCEEvery 8–12 weeks during a program or every 6–12 months for a general functional baseline.
05 / AFTER THE RESULT
Turn the number
into a next step.
- 01
Choose one limitation to train
- 02
Pair strength with aerobic capacity and body composition only when useful
- 03
Escalate unexplained decline
DO NOT WAIT ON A CONSUMER TEST
New one-sided weakness, sudden balance loss or neurologic symptoms require urgent evaluation
06 / MODERN BIO SELECT
Built for a responsible purchase path.
The value is the repeatable protocol and interpretation, not a gadget leaderboard.Grip strength + functional capacity
- Future format
- Validated dynamometer + guided test protocol
- Price position
- Entry device or facility assessment
- Before checkout
- Eligibility · method · privacy · total cost · interpretation · abnormal-result routing
07 / SCIENTIFIC FOUNDATION