In the United States, we have high expectations for our diagnostics. Lipid profiles, urine analysis, and HIV CD4 counts are requested stat. If a person might be anemic, iron levels are checked immediately. And if there’s the slightest chance a woman might be pregnant, she expects a home pregnancy test to confirm or deny a pregnancy pronto.
Though I am making light of our impatience, accurate diagnosis can be the difference between life and death for serious conditions—which is why the lack of effective diagnostics in poor countries is such a problem.