In a study of 150 melanoma patients, 95% of those testing positive for melastatin stayed in remission for four years, versus half of those testing negative.

FORBES: Divining Disease

The possible alternative is a false negative that leads to no further testing while the thing grows.

FORBES: Head-In-The-Sand Medicine: To Test Or Not To Test

It is a negative sign that prices have just been testing the flattening 20-day EMA but have not been able to decisively close below it.

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They have also undergone alcohol and drug testing, and the preliminary results were negative, Herry Bakti Gumay, a Transportation Ministry official, told a news conference Sunday.

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The weekly on-balance volume (OBV) formed a negative divergence at the highs (line h), and is testing its long-term uptrend (line i).

FORBES: What Should Income Investors Do Now?

As noted previously, the weekly on-balance volume (OBV) did form a negative divergence at the recent highs (see circle) and is now testing its weighted moving average.

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Then there is the pain and potential negative side effects of treatment after a problem is detected and confirmed by subsequent testing.

FORBES: Head-In-The-Sand Medicine: To Test Or Not To Test

Once again a trial testing the erythropoiesis-stimulating agent darbepoetin alfa (Aranesp, Amgen) has produced a negative result.

FORBES: Yet Another Negative Trial For Amgen's Aranesp