Make a ULR number
Your ULR will appear here.
Check a ULR number
Paste a ULR to see what each part means.
This tool follows NABL's clarification of 11 June 2026 (revised 15 June 2026). It runs in your browser and sends nothing anywhere. Check the result against NABL's current documents before you print it.
What is the full form of ULR in NABL?
ULR is short for Unique Laboratory Report number. It is not the same as your report number: NABL asks for it in addition to the number your lab already gives each report. NABL's clarification of 11 June 2026 explains that it was introduced so that the Government e-Marketplace (GeM) can match test reports to sellers' claims.
What is the NABL ULR number format in 2026?
The format depends on the format of your accreditation certificate number. The June 2026 clarification gives these:
| Your certificate number | ULR structure | Length | Example (45th report of 2026) |
|---|---|---|---|
| New format, e.g. NABLT0626MP20001 | Full certificate number + 2-digit year + 8-digit running number | 26 characters | NABLT0626MP200012600000045 |
| TC-XXXXX (5 digits) | TC + 5 digits + 2-digit year + 8-digit running number | 17 characters | TC123452600000045 |
| TC-XXXX (4 digits) | TC + 4 digits + 2-digit year + 8-digit running number | 16 characters | TC12342600000045 |
| CC-XXXX (calibration) | CC + 4 digits + 2-digit year + 8-digit running number | 16 characters | CC12342600000045 |
The examples use fictitious certificate numbers. The year is the year the report is issued. The running number starts at 00000001 and restarts every calendar year, and NABL allows hexadecimal numbering if a lab needs more numbers. There is no hyphen, no location digit and no letter at the end.
What does the new NABL certificate number mean?
NABL announced a new format for accreditation certificate numbers on 3 June 2026 (revised 6 July 2026). Using NABL's own example, NABLT0626MP20001 reads like this:
- NABL: fixed prefix.
- T: the field. T is testing and C is calibration; NABL also uses M (medical), P (proficiency testing providers), R (reference material producers) and B (biobanks).
- 06 and 26: the month and year of grant or renewal.
- MP: the two-letter state or union territory code. Labs outside India get GL.
- 20001: the number.
Labs keep their old TC or CC number until NABL issues the new one. After that, the old number can be used for at most six months while software and stationery are updated. The NABL symbol, the certificate number and the ULR all carry your accreditation number, so it is simplest to change all three on the same day.
When should a report not carry a ULR?
- When it has non-accredited parameters. The clarification says the system “is not to be used in reports containing parameters outside the scope of NABL accreditation”. Put those parameters on a separate report.
- Where NABL says it is not mandatory. The clarification lists in-house labs such as bulk petroleum manufacturers' labs, and “non-commodities like air, waste water and similar environmental parameters, Soil & rock, Cell Culture”, veterinary, dope and forensic testing. It is still allowed on those reports.
An amended report may keep the same ULR; NABL leaves that choice to the lab.
What happened to the F and P at the end of the ULR?
NABL's circulars of November and December 2021 used an 18-character ULR with a location digit and a final “F”, meaning every parameter on the report was accredited. The June 2026 formats have no location digit and no final letter. If your report template or software still builds an 18-character ULR, it needs updating.
Common ULR mistakes on reports
- A ULR on a report that also has non-accredited parameters.
- The old 18-character format with F or P at the end.
- A running number that did not restart on 1 January, or two reports with the same number because two people kept separate registers.
- A hyphen left in, as in TC-12345, or the year of the certificate used instead of the year of issue.
For everything else a NABL test report must contain, see our NABL test report format guide. For calibration certificates, see the NABL calibration certificate format.
Where Tanush LIMS fits
Typing ULRs by hand is where duplicates and wrong years creep in. Tanush LIMS gives each accredited report its ULR from your NABL number and a running number, prints the NABL symbol only on your accredited scope, and keeps non-accredited parameters off the accredited report. The ULR format is set up for your certificate number, including the new 2026 format. It runs on your lab's own PC, even without internet, or in the cloud. NABL accredits laboratories, not software. See Tanush LIMS for NABL labs or book a demo.