Key points
- The CDC STEADI 4-Stage Balance Test progresses through feet side by side, semi-tandem, tandem, and single-leg stance, each held for 10 seconds.
- An older adult who can't hold the tandem stance for at least 10 seconds is at increased risk of falling.
- A pass/fail result hides how much a patient sways; objective capture adds that detail for tracking.
A simple screen with a clear purpose
Falls in older adults rarely have a single cause, but impaired static balance is one of the factors clinicians can check quickly. The 4-Stage Balance Test, part of the CDC's STEADI (Stopping Elderly Accidents, Deaths & Injuries) toolkit, is designed for exactly that: a short, low-equipment screen that fits into a routine visit.
How the test works
The patient progresses through four standing positions, eyes open and without an assistive device, trying to hold each for 10 seconds without moving their feet or needing support:
- Feet side by side.
- Semi-tandem — the instep of one foot touching the big toe of the other.
- Tandem — one foot directly in front of the other, heel to toe.
- Single-leg stance — standing on one foot.
The test stops when a position can't be held. Per the STEADI assessment sheet, an older adult who cannot hold the tandem stance for at least 10 seconds is at increased risk of falling. (We list this cut-off alongside other cited values in our functional test reference values.)
What a pass/fail result leaves out
The 10-second rule is a useful screening threshold, but a binary result hides a lot. Two patients who both "pass" the tandem stance can look very different: one stands quietly, the other sways, reaches with their arms, and barely makes it. Two patients who both "fail" may differ by a fraction of a second or by several seconds.
Those differences matter for treatment planning and for tracking. A patient whose sway in tandem stance is decreasing over several weeks is improving, even if every session is scored the same way on paper.
Where objective capture adds depth
Measuring postural sway objectively turns the same two-minute test into richer data: how long each position was actually held, how much the body moved while holding it, and how that compares with the patient's own previous sessions. Captured consistently, those details help a clinician see change earlier and document it more precisely than a stopwatch and a checkbox. For more on sway itself, see measuring balance and postural sway objectively.
Keeping the screen in context
The 4-Stage Balance Test is one piece of a fall-risk picture. STEADI pairs it with other assessments — such as the Timed Up and Go and the 30-Second Chair Stand — and with a review of history, medications, vision and the home environment. No single test, and no single number, determines a patient's risk.
Objective measurement is decision support: it gives clinicians a clearer, more consistent view of balance over time. Interpreting that view, and deciding what to do about it, remains a matter of clinical judgment.