Data Element

Information from the submission form

Laboratory Test Performed Date
The clinically relevant date/time of the observation. In the case of observations taken directly from a subject, it is the actual date and time the observation was obtained. In the case of a specimen-associated study, this field shall represent the date and time the specimen was collected or obtained.


Unified Comment from CDC

  • Citable sources:   CDC has promulgated use of the terms contact precautions, droplet precautions, and airborne precautions for many years.  Additional background information and useful definitions are available at:  
  • Additional Use Case: HIV, STDs, Viral Hepatitis and Tuberculosis are nationally notifiable diseases for which diagnosis is dependent upon laboratory results. As such, laboratory test performed date, result value and result status are collected as part of CDC's routine surveilannce for these conditions. Additionally, beyond diagnostic tests, additional laboratory test information is collected to understand the health status of patients (e.g. HIV viral load, liver enzymes), and trends in drug susceptibility.
  • Additional Use Case: This is a standard data item used by central cancer registries in all states. Data received through data exchange from pathology laboratories to central cancer registries for CDC and NCI’s national cancer surveillance systems, as required by law.    
  • All of the laboratory data collected is used both for case management purposes within state, local, territorial and tribal health jurisdictions, and public health purposes at the national level. These data are integral to understanding disease transmission and to prioritize appropriate interventions for affecting communities.  
  • Estimate number of stakeholders who capture, access, use or exchange this data element: All US States and DC are funded through CDC’s Division of HIV Prevention, Division of TB Elimination, Division of STD Prevention, and Division of Viral Hepatitis flagship Notice of Funding Actions to perform surveillance activities, including collection of these data for surveillance purposes.  
  • Healthcare Aims: Improving patient experience of care, Improving health of populations, Reducing cost of care, provider experience of care.  
  • Use of data element: Extensively used in production environment  
  • CSTE supports inclusion of this measure into USCDI v3

The data element name and definition don’t match

The clinically relevant date time of the observation for a lab test is the specimen collection, which is part of the element definition. So if that is what is desired here it should be merged with this element Specimen collection date/time ( If the desire is to represent the actual date/time the result was obtained as the name suggests, it should be merged with Laboratory results: date and timestamps ( For non- lab observations the clinically relevant time is the same as this element Observation Timing (

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