[jolmg]

Does that translate to 5-10% chance of false-negative? Can't that be improved simply by having multiple tests with a few more drops of blood?

[jobigoud]

90% sensitivity = 10% false negatives. When the patient has the condition, it is detected 90/100 of the time.

95% specificity = 5% false positives. When the patient doesn't have the condition, it is correctly not detected 95/100 of the time.