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OPERATING SEGMENT AND GEOGRAPHIC INFORMATION (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
operating_segments
Sep. 30, 2011
Dec. 31, 2011
Segment Reporting Information [Line Items]          
Number of operating segments (in operating segments)     3    
Net sales $ 7,889 $ 8,253 $ 24,188 $ 23,400  
Gross profit 3,800 4,445 11,466 13,152  
Net income (loss) before taxes (2,640) (1,279) (5,926) (10,165)  
Income tax expense (benefit) 114 (9) 88 (120)  
NET LOSS (2,754) (1,270) (6,014) (10,045)  
Depreciation/Amortization 495 481 1,570 1,506  
Restructure 0 5 0 40  
Interest expense, net (207) (238) (713) (720)  
Total Assets 42,887 29,974 42,887 29,974 33,562
Clinical laboratories
          
Segment Reporting Information [Line Items]          
Net sales 4,498 4,085 13,329 11,435  
Gross profit 2,385 2,456 6,693 6,787  
Net income (loss) before taxes (1,694) (1,472) (4,309) (11,331)  
Income tax expense (benefit) 0 (20) 0 0  
NET LOSS (1,694) (1,452) (4,309) (11,331)  
Depreciation/Amortization 418 350 1,265 1,113  
Restructure   2 0 28  
Interest expense, net (201) (238) (665) (720)  
Total Assets 28,822 20,822 28,822 20,822  
Pharmacogenomic services
          
Segment Reporting Information [Line Items]          
Net sales 220 552 1,198 1,824  
Gross profit (38) 241 418 764  
Net income (loss) before taxes (213) 122 (310) 615  
Income tax expense (benefit) 0 0 0 0  
NET LOSS (213) 122 (310) 615  
Depreciation/Amortization 24 75 92 184  
Restructure   0 0 0  
Interest expense, net 0 0 (11) 0  
Total Assets 1,731 953 1,731 953  
Diagnostic tools
          
Segment Reporting Information [Line Items]          
Net sales 3,171 3,616 9,661 10,141  
Gross profit 1,453 1,748 4,355 5,601  
Net income (loss) before taxes (733) 71 (1,307) 551  
Income tax expense (benefit) 114 11 88 (120)  
NET LOSS (847) 60 (1,395) 671  
Depreciation/Amortization 53 56 213 209  
Restructure   3 0 12  
Interest expense, net (6) 0 (37) 0  
Total Assets 12,334 8,199 12,334 8,199  
United states
          
Segment Reporting Information [Line Items]          
Net sales 5,442 6,034 17,013 16,738  
Italy
          
Segment Reporting Information [Line Items]          
Net sales 571 762 2,277 2,373  
United kingdom
          
Segment Reporting Information [Line Items]          
Net sales 546 193 1,113 451  
FRANCE
          
Segment Reporting Information [Line Items]          
Net sales 264 166 575 579  
GERMANY
          
Segment Reporting Information [Line Items]          
Net sales 517 187 769 581  
All other countries
          
Segment Reporting Information [Line Items]          
Net sales $ 549 $ 911 $ 2,441 $ 2,678  
Maximum | All Other Countries [Member]
          
Segment Reporting Information [Line Items]          
Percent of revenue from countries not separately disclosed     5.00%    
Minimum | United states
          
Segment Reporting Information [Line Items]          
Long-lived asset percentage held in a specific location 95.00%   95.00%