Scrubs exist to protect both healthcare workers and patients from infection, provide a functional uniform for physically demanding work, and signal professional identity in clinical settings. What started as simple surgical gowns in the 1940s has evolved into purpose-built clothing designed around hygiene, comfort, and safety during long shifts.
How Scrubs Became the Standard
For most of medical history, surgeons operated in their own street clothes, sometimes throwing on a butcher’s apron to keep blood off their shirts. They worked bare-handed with non-sterile instruments. It wasn’t until the 1918 flu pandemic and growing acceptance of antiseptic theory that surgical teams started wearing even basic protective gear like cotton gauze masks, and those were initially meant to protect the surgeon from the patient’s diseases, not the other way around.
By the 1940s, advances in understanding wound infection led hospitals to adopt antiseptic drapes and gowns in operating rooms. Early versions were white to emphasize cleanliness, but bright operating lights bouncing off an all-white environment caused serious eye strain. Through the 1950s and 1960s, hospitals switched to shades of green, which reduced eye fatigue and made red blood splashes less jarring to look at. By the 1970s, the modern scrub uniform had taken shape: a short-sleeve V-neck shirt with drawstring pants, made from cotton or a cotton-polyester blend. The name “scrubs” came from the fact that this clothing was worn in the “scrubbed” (sterile) environment of the operating room.
Infection Control and Barrier Protection
The most important reason for wearing scrubs is keeping pathogens from spreading between patients, staff, and the outside world. Street clothes travel everywhere: the bus, the grocery store, your couch. Changing into scrubs at the start of a shift creates a clean starting point, and leaving them behind at the end keeps hospital bacteria out of your home.
Standard scrubs provide a basic physical barrier between a healthcare worker’s skin and the blood, bodily fluids, and other contaminants they encounter throughout a shift. Newer fabric technologies go further. Scrubs treated with fluid-repelling and antimicrobial coatings can dramatically reduce the number of dangerous organisms living on the fabric’s surface. In one study, scrubs treated with a combination of fluid barrier and antimicrobial technology showed a million-fold reduction in MRSA compared to untreated scrubs. That matters because traditional cotton and polyester fabrics absorb organic material from blood and body fluids, which can actually help bacteria survive and spread.
For higher-risk situations, specialized barrier fabrics are rated on a four-level scale. Level 4 fabrics, used in surgical gowns for the riskiest procedures, are certified to block both fluids and viral pathogens. These heavier-duty materials weigh anywhere from about 160 to 475 grams per square meter, depending on whether they need to absorb fluids or simply repel them.
How Scrubs Get Clean Enough
Scrubs pick up bacteria throughout a shift, which is why proper laundering is critical. The CDC recommends washing healthcare textiles in hot water at a minimum of 160°F (71°C) for at least 25 minutes to effectively destroy microorganisms. Adding chlorine bleach provides an extra layer of safety, activating at water temperatures between 135°F and 145°F and reaching effective disinfecting levels of 50 to 150 parts per million during the bleach cycle.
Many hospitals handle scrub laundering in-house for exactly this reason. Home washing machines typically don’t reach the temperatures or cycle lengths needed for hospital-grade disinfection. When low-temperature wash cycles are used, chlorine or oxygen-activated bleach becomes essential to compensate for the reduced heat. This is one reason many facilities provide scrubs on-site rather than having staff wash their own: it ensures every set meets a consistent hygiene standard.
Built for Long, Physical Shifts
Healthcare work is physically punishing. Nurses walk an average of four to five miles per shift. Surgeons stand for hours. Emergency staff sprint, kneel, and twist constantly. Scrubs are designed around these demands in ways street clothes simply aren’t.
The V-neck cut allows free arm movement without restriction. Stretch panels in the fabric accommodate bending, squatting, and reaching overhead. Adjustable waistbands and tagless labels reduce the kind of small irritations that become unbearable over a 12-hour shift. Reinforced seams hold up under repeated industrial laundering, and fluid-resistant finishes help repel spills before they soak through.
Pockets are a bigger deal than they might sound. Scrubs typically include multiple pockets sized for the tools healthcare workers carry constantly: pens, scissors, hemostats, phones, notepads, and badge holders. Some designs include hidden snaps, zippered closures, and side slits that make it easier to access equipment quickly or move through tight spaces around beds and stretchers. These features aren’t luxuries. When seconds matter, fumbling with your clothes shouldn’t be part of the equation.
What Patients Actually Think
Scrubs do something subtler than protect against germs: they shape how patients perceive their care. A study published in Cureus found that patients rated doctors wearing scrubs significantly higher than those in formal office attire across every measure tested. On a 10-point scale, scrubs scored a mean of 7.52 for professionalism versus 6.69 for formal wear. Friendliness, aptitude, and empathy all showed similar gaps, with scrubs consistently rated about a full point higher.
The researchers suggested that familiarity plays a role. Patients associate scrubs with medical care, and that association is comforting. Seeing a provider in scrubs immediately signals “this person is here to take care of me” in a way that a button-down shirt and slacks don’t. One particularly notable finding: when doctors wore formal attire, female physicians scored lower on professionalism than male physicians. When both wore scrubs, that gender gap disappeared entirely. Scrubs appear to level the playing field, letting patients focus on competence rather than appearance.
Color Coding and Team Identity
Many hospitals assign specific scrub colors to different departments or roles. Surgical teams might wear green or blue. Nurses might wear navy or ceil blue. Lab techs, respiratory therapists, and nursing assistants each get their own color. This system helps patients and visitors quickly identify who’s who in a busy hospital, and it helps staff spot someone who doesn’t belong in a restricted area.
Color coding also reinforces team identity. When everyone in your department wears the same thing, it removes status signaling from clothing and puts the focus on the work. There’s no competition over outfits, no daily decision fatigue about what to wear, and no risk that personal clothing choices create an unprofessional impression. For staff pulling consecutive long shifts, one less decision in the morning is a small but real quality-of-life benefit.