Entering new territory: direct to patient testing expands laboratory's offerings.
D001291:Attitude of Health Personnel; D003955:Diagnostic Tests, Routine / Q000191:economics / Q000706:statistics & numerical data; D004465:Economic Competition; D006801:Humans; D020407:Internet / Q000706:statistics & numerical data*; D007753:Laboratories / Q000458:organization & administration*; D010350:Patient Credit and Collection; D017060:Patient Satisfaction; D010820:Physicians / Q000523:psychology; D014481:United States