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The following defining attributes are unique in the context of the 386053000 |Evaluation procedure (procedure)| subhierarchy. Many of these attributes (e.g., Component, Scale type) are used to define Observable entity concepts.  Evaluation procedures may use the attributes below in addition to those attributes allotted to the 

Component

Component refers to what is being observed or measured by a procedure.

For example,

• Concept
  t 442165003 442091000 |Quantitative measurement of polychlorinated biphenyl in blood specimen Measurement of ethanol using gas chromatography (procedure)|

   has 

  Concept
  t 246093002 |Component (attribute)|

   of 

  Concept
  t 42001007 419442005 |Polychlorinated biphenyl (substance)|

...

• Ethanol (substance)|

Image Added

Inferred view of 442091000 |Measurement of ethanol using gas chromatography (procedure)|

Although Pharmaceutical / biologic product (product) and its descendants are considered valid values for the Component (attribute), they are not currently used as values for this attribute in the International Release. The only exception is 787859002 |Vaccine product (medicinal product)| and its descendants, which are used as valid values for this attribute.

Has specimen

Has Specimen indicates the type of specimen on which a measurement or observation is performed.

...

• Concept
  t 442165003 |Quantitative measurement of polychlorinated biphenyl in blood specimen using gas chromatography (procedure)|

   uses 

  Concept
  t 116686009 |Has specimen (attribute)|

   of 

  Concept
  t 119297000 |Blood specimen (specimen)|

   

Measurement method

Measurement Method specifies the method by which an evaluation procedure is performed. It provides additional specificity. For measurement procedures, the 

Also, the

...

• Concept
  t 442165003 |Quantitative measurement of polychlorinated biphenyl in blood specimen using gas chromatography (procedure)|

   has a 

  Concept
  t 370129005 |Measurement method (attribute)|

   of 

  Concept
  t 2842000 |Gas chromatography measurement (procedure)|

Image Added

Stated view of 442165003 |Quantitative measurement of polychlorinated biphenyl in blood specimen using gas chromatography (procedure)|

Property

Property specifies the kind of property (quality or characteristic) being measured.

...

• Concept
  t 19165008 |Measurement of limb length (procedure)|

   has a 

  Concept
  t 370130000 |Property (attribute)|

   of 

  Concept
  t 410668003 |Length property (qualifier value)|

...

Image Added

Stated view of 19165008 |Measurement of limb length (procedure)|

Scale type

Scale Type refers to the scale of the result of an observation of a diagnostic test.

...

• Concept
  t 442165003 |Quantitative measurement of polychlorinated biphenyl in blood specimen using gas chromatography (procedure)|

   has 

  Concept
  t 370132008 |Scale type (attribute)|

   of 

  Concept
  t 30766002 |Quantitative (qualifier value)|

Time aspect

Time Aspect specifies temporal relationships for a measurement procedure.  While this attribute has been approved, guidelines for its implementation await development.

Further clarification

An evaluation procedure may evaluate a property of a component, or a property may be the sole focus of the method. In the latter case, component isn’t included since only the property is being evaluated.

For example of - an evaluation procedure evaluating a property property of a component,:

• Concept
  t 443834000 |Quantitative measurement of mass concentration of bismuth in urine specimen (procedure)|

  has

  Concept
  t 370130000 |Property (attribute)|

  of

  Concept
  t 118539007 |Mass concentration (property) (qualifier value)|

  and

  Concept
  t 246093002 |Component (attribute)|

  of

  Concept
  t 23172004 |Bismuth (substance)|

...

Image Added

Inferred view of 443834000 |Quantitative measurement of mass concentration of bismuth in urine specimen (procedure)|

For example - where property may be the sole focus of the method,:

• Concept
  t 78888000 |Osmolality measurement, urine (procedure)|

Inferred view of 78888000 |Osmolality measurement, urine (procedure)|