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Note 9 - Revenue (Tables)
3 Months Ended
Mar. 31, 2024
Notes Tables  
Disaggregation of Revenue [Table Text Block]
   

Three Months Ended

 
   

March 31,

 
   

2024

   

2023

 

Testing

  $ 4,540     $ 4,938  

Shipping/Collection (hair)

    785       898  

Other

    32       23  

Total Revenue

  $ 5,357     $ 5,859