Question 1

What is NVLAP and who operates it?

Accepted Answer

NVLAP (National Voluntary Laboratory Accreditation Program) is operated by NIST, the National Institute of Standards and Technology, within the US Department of Commerce. It is the US government's own laboratory accreditation program, establishing recognized accreditation for testing and calibration disciplines that align with federal agency requirements and regulatory programs.

Question 2

Which industries require NVLAP accreditation?

Accepted Answer

NVLAP operates accreditation programs for energy efficiency (ENERGY STAR), building products (windows, doors, insulation), information technology (FIPS cryptographic modules), telecommunications, asbestos fiber analysis, electromagnetic compatibility, and construction materials. Government agencies that reference NVLAP include EPA, DoE, HUD, and certain DoD acquisition programs.

Question 3

Is NVLAP accreditation equivalent to A2LA or ANAB?

Accepted Answer

For ISO/IEC 17025 purposes, NVLAP is equivalent to A2LA, ANAB, IAS, and PJLA — all are ILAC signatories assessing to the same standard. The key difference is scope: NVLAP program areas are defined by government program requirements, while A2LA and ANAB offer broader scope across commercial industries. If your requirement references NVLAP specifically, only NVLAP will satisfy it.

Question 4

How do I find out if my testing need is covered by a NVLAP program?

Accepted Answer

NVLAP publishes its accreditation programs at nist.gov/nvlap. Each program (e.g., Energy Efficient Lighting Products, Building Materials Testing) has a defined scope and technical requirements. If your testing need falls within a regulated product category, confirm whether the applicable agency or standard references NVLAP specifically — many ENERGY STAR programs require NVLAP accreditation by name.

NVLAP Accredited Labs

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NVLAP labs by state

Frequently asked questions

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