Every lab testing human samples in the U.S. needs a CLIA certificate — but not every lab needs the same one. Picking wrong means either paying for oversight you don't need or operating outside your certificate. Here's the plain-English breakdown.

Certificate of Waiver. For labs performing only waived tests — simple, low-risk tests like rapid strep, urine dipsticks, or fingerstick glucose. No routine inspections, but you still must follow manufacturer instructions exactly.

Certificate for Provider-Performed Microscopy (PPM). For physician, midlevel practitioner, or dentist offices performing a defined list of microscopy procedures (like wet mounts or KOH preps) during patient visits. Limited to the PPM procedure list.

Certificate of Registration. A temporary certificate issued while you await your initial survey — it lets you operate while CMS processes a Certificate of Compliance or Certificate of Accreditation application. It's a bridge, not a destination.

Certificate of Compliance. For labs performing moderate- and high-complexity testing that choose CMS (usually via state survey agencies) as their inspector. Expect a survey every two years.

Certificate of Accreditation. For labs that choose a deemed-status accrediting organization — CAP, COLA, or The Joint Commission — instead of direct CMS oversight. You follow the accreditor's checklists and get inspected by them.

How to choose: start from your test menu. Only waived tests? Waiver. Moderate/high complexity? Then decide between Compliance (CMS surveys) and Accreditation (private accreditor). Many labs choose accreditation for the education-focused inspection style and specialty checklists.

Not sure where your planned test menu lands? That's exactly what we help labs figure out before they apply — book a consultation at zilgene.com.