Where should I send my check payments?

For membership, product invoices, or new orders, please send check payments to:

CLINICAL AND LABORATORY STANDARDS INSTITUTE
PO BOX #645766
PITTSBURGH, PA 15264-5255

For overnight payments, please send payments to:

PNC Bank C/O CLINICAL AND LABORATORY STANDARDS INSTITUTE
LOCKBOX #645766
500 1ST AVE
PITTSBURGH, PA 15219