["Laboratory Test, Performed": "Hematocrit lab test"]

Data elements that meet criteria using this datatype should document the laboratory test indicated by the QDM category and its corresponding value set was performed.

Timing:

• relevant dateTime references the time the laboratory test is performed when the laboratory test occurs at a single point in time.
• relevantPeriod references a start and stop time for a laboratory test that occurs over a time interval. relevantPeriod addresses:
  • startTime - The time the laboratory test begins.
  • stopTime - The time the laboratory test ends.
• author dateTime references the time the action was recorded.
• Refer to the eCQM expression to determine allowable timings to meet measure criterion.

Examples:

• Initiation of a venipuncture for a fasting blood glucose to the time venipuncture for the fasting blood glucose is completed – use relevant dateTime to reference this single point in time for many specimen collections
• Initiation of a 24-hour urine collection for measured creatinine clearance until completion of the 24-hour urine collection – use relevantPeriod to reference the start to stop time for this event.

Notes:

• The time that the result report is available is a separate attribute than the time of the study (specimen collection).
• negation rationale indicates a one-time documentation of a reason an activity is not performed. Negation of QDM datatype-related actions for a reason always use the author dateTime attribute to reference timing and must not use relevantPeriod.