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"1" - leading digit
"xxxx" - 4 digits of EPAOrgIdEPA Org Id
"xxx" - 3 digits of LARS Standard Code (leading 0s)
"00 - 09" - 10 unique ulns per standard code
1-EPAOID-LARSID-00to09
Example. For EPA0001, Standard LARS Code = ST023780, and 1st uln in the sequence
ULN = "1" + "0001" + "237080" + "01" = 10001237011000108001
FamilyName = 1000123701 1000108001 (same value as uln)
The next test ULN would be 10001237021000108002, then 100123703 100108003 etc.
Your EPAO registration number can be found on the Register of End Point Assessment Organisations if you do not know it
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