N95 fit tests are most commonly available at occupational health clinics, safety consulting firms, and some hospital-affiliated health services. If your employer requires you to wear an N95, they are legally responsible for arranging and paying for your fit test. If you need one on your own, expect to pay around $75 and spend about 25 minutes at the appointment.
Your Employer May Be Required to Provide It
Under OSHA’s respiratory protection standard (29 CFR 1910.134), any employer that requires workers to use tight-fitting respirators must provide fit testing before the employee first uses the respirator, and at least once a year after that. The employer also has to pay for it and arrange it. This applies across industries: healthcare, construction, manufacturing, painting, and any other workplace where respirator use is mandatory.
If you switch to a different make, model, or size of respirator, you need a new fit test for that specific mask. Your employer is also required to retest you if something changes about your face or body that could affect the seal, such as significant weight change, dental work, facial scarring, or cosmetic surgery. If you tell your employer the respirator doesn’t feel right, they must give you the chance to try a different one and get retested.
Where Individuals Can Get Tested
If you’re looking for a fit test on your own, perhaps because you’re a freelancer, a volunteer, or simply want proper protection, here are the main options:
- Occupational health clinics. These are the most reliable option. Many hospital systems and standalone occupational medicine practices offer fit testing as a routine service. Search for “occupational health clinic” plus your city name.
- Safety consulting and industrial hygiene firms. Companies like SAFEX, The EI Group, and Worksite Medical specialize in workplace safety services including respirator fit testing. Many operate regionally and some travel to your location.
- Mobile fit testing services. Some providers send trained testers directly to a workplace or group setting. These are designed for employers testing multiple people at once, but smaller businesses can sometimes use streamlined kits to perform testing on-site with remote guidance.
- University and hospital employee health departments. Some academic medical centers offer fit testing to outside individuals, not just their own staff. Call ahead to confirm availability.
Major retail pharmacy clinics like CVS MinuteClinic do not currently list N95 fit testing among their services. Urgent care centers occasionally offer it, but it’s not standard. Your best bet is always an occupational health provider.
What Happens During the Test
A standard qualitative fit test takes about 25 minutes. You put on the N95, and the tester checks that it’s positioned correctly with a good seal against your face. Then you’re exposed to a harmless test substance, typically a sweet or bitter aerosol (saccharin or Bitrex). While wearing the mask, you’ll be asked to do a series of movements: turning your head side to side, bending over, talking, breathing normally and deeply. If you can taste or smell the substance at any point during these exercises, the mask doesn’t fit properly and you’ll need to try a different size or model.
That’s the qualitative method, which is a simple pass/fail and works for half-mask respirators like N95s used in most settings. There’s also a quantitative method that uses a machine to measure exactly how much air leaks around the seal and assigns a numerical fit factor. Quantitative testing is required for full-facepiece respirators or when workers will be exposed to very high concentrations of hazardous substances. For most people seeking an N95 fit test, the qualitative method is what you’ll get.
How to Prepare
The single most important preparation step: your face must be clean-shaven wherever the respirator’s seal touches your skin. That means no beard, no stubble along the jawline or chin where the mask sits. Short mustaches and soul patches that don’t extend under the seal area may be acceptable, but that’s a judgment call made by the person administering the test. If you show up with facial hair in the seal zone, you won’t pass, and most testers will send you home rather than waste everyone’s time.
Avoid eating, drinking, smoking, or chewing gum for at least 15 to 30 minutes before the test. These can affect your ability to taste the test aerosol, which would make qualitative results unreliable. Bring the specific N95 mask you plan to use if you have one, since the fit test is only valid for the exact make, model, and size tested.
Cost and What You’ll Receive
Prices vary by provider and region, but a single qualitative fit test typically runs around $50 to $100 per person, with $75 being a common price point. Employers testing large groups often negotiate lower per-person rates, especially with mobile services. If your employer requires you to wear an N95, this cost falls on them, not you.
After passing, you’ll receive documentation recording the specific respirator you were tested with (make, model, size), the type of test performed, and the date. Keep this record. It’s valid for one year under OSHA rules, and your employer is required to maintain it as part of their respiratory protection program. If you tested independently, store your own copy so you can show it to future employers or organizations that require proof of a current fit test.