1.1 Competency, Hygiene, and Garbing

Why personnel controls come first

PTCB's Certified Compounded Sterile Preparation Technician (CSPT) exam is 75 multiple-choice questions (60 scored, 15 unscored) delivered in a 2-hour appointment with a 1-hour-50-minute test window, and a passing scaled score of 1,400 on a 1,000-1,600 scale. The exam was republished November 1, 2023 to match the revised USP General Chapter <797>. Sterile Compounding Procedures is the largest knowledge domain, and within it the first topics are not syringes or math — they are people: training, competency, health screening, hand hygiene, and garbing. The cleanroom cannot rescue an untrained or improperly garbed compounder.

Aseptic compounding rests on documented competence, not informal confidence. A technician must know the facility's standard operating procedures (SOPs), demonstrate garbing and hand hygiene, pass required microbial sampling, and complete media-fill simulations that mirror the hardest manipulations they actually perform.

Competency evidence and frequency

Gloved fingertip sampling presses each gloved fingertip and thumb onto general-purpose agar (such as trypticase soy agar, TSA) to count colony-forming units after garbing. It checks the compounder's technique — it does not prove a finished CSP is sterile. Media-fill testing substitutes a sterile growth medium for drug product to simulate real compounding; a pass supports the person's technique for that complexity, and a fail triggers investigation, remediation, and successful reassessment before independent work resumes.

Health and hygiene screen

A technician must not compound with an active respiratory infection, rash, weeping sore, sunburn, or any condition that increases shedding or contamination risk. Visible jewelry, long or artificial nails, nail polish, gel/shellac coatings, and cosmetics are prohibited because they shed particles, harbor organisms, or block effective hand hygiene.

Hand hygiene is procedural, not symbolic: wash hands and forearms to the elbow per policy, dry with a low-lint wipe or dryer, don sterile gloves correctly, and routinely disinfect gloves with sterile 70% isopropyl alcohol (sIPA) during work. If a glove tears, contacts a nonsterile surface, or is doubted, stop and replace it.

Garbing logic and PPE

Typical garb for nonhazardous CSPs is donned dirtiest-to-cleanest: shoe covers, then hair cover, beard cover (if needed), and face mask in the ante-area, followed by hand hygiene, gown, hand antisepsis, and finally sterile gloves inside or near the buffer area. Sequence follows facility policy and room design, but the principle is constant — never contaminate already-donned garb.

Hazardous drug (HD) work under USP <800> adds exposure controls: ASTM-tested chemotherapy gloves (double-gloved and changed at least every 30 minutes or when torn or contaminated), impervious back-closing gowns, eye/face protection when splashing is possible, and sleeve covers when required. PPE bearing HD residue is hazardous waste, not regular trash, and must be doffed inside the containment area to avoid spreading residue across clean zones.

Doffing sequence is itself an exam topic. Garb is removed in an order that keeps the most contaminated items away from skin and clean clothing: typically gloves first (the dirtiest barrier), then gown, then the ante-area items, with hand hygiene performed after removing gloves and again after fully degowning. For HD work, the outer chemotherapy glove is removed inside the C-PEC and the gown is removed without shaking, then bagged as HD waste. Garb is never reused between sessions or carried out of the classified area.

How the pieces fit together

Think of competency as a chain: didactic knowledge proves the technician understands why a step exists, garbing observation proves they do it correctly, GFS proves their gloved hands stayed clean enough through the process, and media fill proves their full aseptic workflow does not introduce organisms. A weak link anywhere invalidates independent compounding. The exam frequently presents a scenario where one link passed and another failed, then asks which result governs — the failed simulation always wins, because it tests the actual hands-on process rather than recall.

Documentation makes these results defensible. Each evaluation is dated, attributed to a named observer, tied to the compounder's identity, and retained per policy. If GFS exceeds the action level (more than 3 CFU per evaluation under USP <797>, totaled across both gloves for the garbing/GFS combined test), the compounder is re-instructed and re-evaluated before resuming sterile work. The same investigate-remediate-reassess loop applies to a media-fill failure.

Hand antisepsis after gowning and before gloving is a step technicians often blur. The correct flow inside the ante-area finishes with a waterless alcohol-based surgical hand scrub allowed to dry completely, then sterile gloves are donned. Disinfecting gloves with sterile 70% IPA is repeated frequently during compounding and always after touching anything outside the direct compounding area, because gloves are the closest barrier to every critical site.

Exam traps

• Treating competency as a one-time orientation instead of recurring, category-based evidence.
• Forgetting initial garbing competency requires 3 separate successful evaluations.
• Allowing a healthy-looking person to compound despite jewelry, gel nails, or makeup.
• Confusing GFS or media fill with final-product sterility testing.
• Continuing after a glove tear instead of stopping, re-disinfecting, and re-gloving.
• Donning sterile gloves before the alcohol hand scrub has dried, which can compromise glove integrity and antisepsis.