A technician will draw blood to test for cardiac enzymes, which are released into the bloodstream when heart cells die.

Instead they said soothingly that his cardiac enzymes were "minimally elevated."

Neither an initial electrocardiogram nor initial blood tests to measure what are known as cardiac enzymes showed any evidence of a heart attack, hospital officials said.

The first blood tests for cardiac enzymes had not been completed.

Most of the early markers identified were enzymes, and as a result, the term "cardiac enzymes" is sometimes used.

For example, in formal usage, troponin would not be listed as a cardiac enzyme.

Blood tests, including tests to see whether cardiac enzymes are high.

They still weren't detecting any dangerous cardiac enzymes, and most likely he'd be released in the morning, none the worse for the wear.

A blood test will look for a rise in cardiac enzymes.

An electrocardiogram and cardiac enzymes are important both for diagnosis and directing treatment.