FAQ

Why did I fail a set point?
There could be several reasons why your performance was unsatisfactory. Without a deeper knowledge of your measurement process, NAPT staff cannot determine ...
Tue, 13 May, 2025 at 10:36 AM
Why doesn’t NAPT have their Accrediting Body's symbol on their reports?
NAPT serves participates accredited by all major accrediting bodies. As a result, we maintain a long-standing policy of neutrality and do not advertise for ...
Mon, 12 May, 2025 at 12:54 PM
Can I talk with someone about an unsatisfactory measured value?
Yes, please send a detailed email—along with any relevant documents—to napt@proficiency.org. NAPT staff will connect you with the appropriate technical advi...
Mon, 12 May, 2025 at 2:06 PM
Can I perform a retest?
Yes. If you require a retest, please contact us at napt@proficiency.org or call 952-303-6126 to discuss your options. Our staff will be happy to assist you.
Tue, 13 May, 2025 at 10:42 AM
My lab is outside of the USA - why do I have to pay for the importing and exporting of a kit?
Shipping kits to laboratories outside the continental United States incurs additional costs. As a result, all international participants are responsible for...
Fri, 16 May, 2025 at 1:21 PM
Does NAPT ship its kits outside of North America?
No, NAPT does not ship NAPT Full-Service PT Kits outside of North America.   However, NAPT does offer an alternative to the NAPT Full-Service PT Kits, wit...
Wed, 9 Feb, 2022 at 12:06 PM
Why aren’t the En values on the preliminary report?
The primary purpose of the preliminary report is to confirm that NAPT has accurately entered your data submittal into the QMS Navigator Management Applicati...
Mon, 12 May, 2025 at 1:08 PM
What is an artifact?
Calibration is the act of comparing a device under test (DUT) — which has an unknown value — with a reference standard that has a known value. In the contex...
Tue, 13 May, 2025 at 10:49 AM
Is NAPT accredited?
NAPT is an ISO/IEC 17043 accredited proficiency testing provider, and the only one that offering a comprehensive suite of proficiency tests to meet all your...
Tue, 13 May, 2025 at 12:25 PM
Do I have to wait 5 days before receiving a final report?
No. As long as the block is in what is referred to as the “Issue Final Reports” status, participants are welcome to waive the standard 5-day waiting period....
Tue, 13 May, 2025 at 12:33 PM