NOTE 15. REVENUES BY PRODUCT AND SERVICE CATEGORY AND GEOGRAPHIC REGION AND SIGNIFICANT CONCENTRATIONS

Revenue Information

The following is a summary of our revenues by product and service category (in thousands):

	Three Months Ended
	June 30,
Revenues by Product and Service Category	2013		2012
Instruments(1)	$	8,675	$	9,880
Consumables(2)		30,599		29,482
Other products and services(3)		3,858		2,614
Product and service revenues, net		43,132		41,976
Development and licensing revenue		37		38
Total revenues	$	43,169	$	42,014

(1)	Instruments include chemistry analyzers, hematology instruments, VSpro specialty analyzers and i-STAT analyzers.

(2)	Consumables include reagent discs, hematology reagent kits, VSpro specialty cartridges, i-STAT cartridges and rapid tests.

(3)	Other products and services include veterinary reference laboratory diagnostic and consulting services.

The following is a summary of our revenues by geographic region based on customer location (in thousands):

	Three Months Ended
	June 30,
Revenues by Geographic Region	2013		2012
North America	$	34,652	$	33,164
Europe		6,552		7,216
Asia Pacific and rest of the world		1,965		1,634
Total revenues	$	43,169	$	42,014

Significant Concentrations

During the three months ended June 30, 2013, one distributor in the United States, MWI Veterinary Supply, accounted for 23% of our total worldwide revenues. During the three months ended June 30, 2012, one distributor in the United States, Animal Health International, accounted for 13% of our total worldwide revenues.

At June 30, 2013, one distributor in the United States accounted for 32% of our total receivables balance. At March 31, 2013, two distributors in the United States accounted for 12% and 23%, respectively of our total receivables balance.