While the presence of diabetes can be determined with blood tests, scientists have yet to find reliable biological markers for schizophrenia or manic depression.

Prevention is difficult because there are no reliable markers for the later development of the condition.

It was designed to give entry level players on a budget an easy to maintain, effective and reliable marker for the lowest price possible.

The presence of dark skin is not a reliable genetic marker even among African populations.

However, newer research indicates that the melatonin offset may be the more reliable marker.

Both are considered by some as the most reliable markers of disease activity in Crohn's disease.

Is it a reliable biologic marker of breast cancer risk?

However, the Automag today retains its reputation as one of the most reliable mechanical markers ever made.

These results suggest that fluoro-jade is a reliable marker of neurodegeneration.

This remains a challenge in clinical practice due to a lack of reliable markers.