A Simple Step That Prevents a Devastating Error
Wrong-site surgery is among the rarest but most preventable serious surgical errors, and site marking, one of the three core components of the Joint Commission's Universal Protocol alongside pre-procedure verification and the time-out, exists specifically to close this gap through a simple, deliberate step performed well before the patient reaches the sterile field.
Who Must Mark the Site
The Universal Protocol requires that the site be marked by the licensed practitioner who will actually be performing the procedure, and specifically prohibits delegating this responsibility to someone else, precisely because the entire safety value of site marking depends on it being done by the person with direct, first-hand knowledge of the intended surgical site. A mark made by anyone other than the performing surgeon undermines the very purpose of the safeguard.
Involving the Patient
Whenever possible, site marking should occur with the patient awake, alert, and actively involved in confirming the correct site, since patient participation adds another independent verification layer beyond the medical record and imaging studies alone. This is why site marking typically happens during the preoperative holding period rather than after the patient has been sedated or anesthetized, when they can no longer meaningfully participate in the confirmation.
What Marking Actually Looks Like
Site marking uses a mark that remains visible after skin preparation and draping, most commonly the surgeon's initials written directly at or near the intended incision site using a marker specifically designed to withstand surgical prep solutions without fading or smearing. For procedures involving laterality, such as an operation on the right versus left knee, or for procedures involving multiple possible levels, such as spine surgery, the mark must be unambiguous and positioned so it remains visible even after the sterile drapes are applied.
The Surgical Technologist's Role in Verification
While the surgical technologist does not perform the site marking, verifying that the mark is present, visible, and consistent with the scheduled procedure and consent documentation before the procedure begins is a shared team responsibility, not solely the circulating nurse's job. If a surgical technologist notices a missing or ambiguous mark during setup, or during the time-out itself, speaking up immediately is both appropriate and expected, consistent with the broader patient safety culture discussed in our related content.
- Only the performing surgeon may mark the site; this responsibility cannot be delegated
- Marking should occur with the patient awake and actively participating whenever possible
- The mark must remain visible through skin prep and draping
- Every team member, including the surgical technologist, shares responsibility for verifying the mark is present and correct
Handling Ambiguous or Missing Marks During Setup
If a surgical technologist notices during room setup that a required site mark is missing, faded beyond recognition, or ambiguous in a way that could apply to either side of a bilateral structure, this discrepancy should be raised immediately rather than assuming it will be caught later during the formal time-out. Waiting until the time-out to raise a concern you already noticed earlier during setup introduces unnecessary risk and delay that proactive communication could have avoided entirely.
Facilities with a strong safety culture generally reinforce that raising this kind of concern early is valued professional behavior, not an unwelcome interruption to workflow, and surgical technologists should feel confident that flagging a missing or unclear site mark reflects exactly the kind of vigilance the Universal Protocol depends on to function effectively.
Handling Ambiguous or Missing Marks During Setup
If a surgical technologist notices during room setup that a required site mark is missing, faded beyond recognition, or ambiguous in a way that could apply to either side of a bilateral structure, this discrepancy should be raised immediately rather than assuming it will be caught later during the formal time-out. Waiting until the time-out to raise a concern you already noticed earlier during setup introduces unnecessary risk and delay that proactive communication could have avoided entirely.
Facilities with a strong safety culture generally reinforce that raising this kind of concern early is valued professional behavior, not an unwelcome interruption to workflow, and surgical technologists should feel confident that flagging a missing or unclear site mark reflects exactly the kind of vigilance the Universal Protocol depends on to function effectively.
Documenting the specific concern raised and how it was resolved, rather than simply correcting it verbally and moving on, also supports the broader patient safety record-keeping that facilities rely on to identify recurring process gaps, connecting this individual moment of vigilance to the larger continuous improvement effort discussed throughout our patient safety content.
A Simple Step With Profound Safety Value
Site marking exemplifies how a relatively simple, quick procedural step can carry profound patient safety value, preventing one of the most devastating and entirely preventable surgical errors possible. This disproportionate value relative to the effort required makes consistent, careful attention to this step genuinely worthwhile every single time.
Recognizing this outsized value helps sustain the consistent vigilance this step requires, even after performing it routinely across hundreds or thousands of cases throughout an entire surgical technology career.
Review the full Universal Protocol structure in our related patient safety initiatives content, and see our surgical time-out protocol post for the verification step that follows site marking. Explore our full exam prep plans for more patient safety content.