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New attributes that are added to the SNOMED CT concept model (or to a SNOMED CT extension) may require their value to be concrete. Concrete values include integers (e.g. 500), decimals (e.g. 2.75) and , strings (e.g. "PANADOL"), and booleans (e.g. TRUE).

The expression shown below uses both concept values and concrete values to represent a capsule that contains 500 mg of amoxicillin

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   27658006774586009|Amoxicillin only product|:
      411116001|Has manufactured dose form| = 385049006420692007|CapsuleOral capsule|,
      { 127489000|Has active ingredient| = 372687004|Amoxicillin|,
        179999999100|Has basis of strength| = (219999999102372687004|Amoxicillin only|:,
        189999999103|Has strength magnitudevalue| = #500, 199999999101|Has strength unit| = 258684004|mg|)}

The expression below represents an oral solution that contains 0.083 % albuterol.

   91143003|Albuterol|:
      411116001|Has manufactured dose form| = 385023001|oral solution|,
      {127489000|Has active ingredient| = 372897005|Albuterol|,
       179999999100|Has basis of strength| = (229999999109372897005|Albuterol only|:,
       189999999103|Has strength magnitudevalue | = #0.083, 199999999101|Has strength numerator unit| = 118582008|%|)}

StringBoolean and string-based concrete values may also be used. For example, the expression below represents a tablet containing 500 mg of paracetamol with a trade name (or brand name) of "PANADOL"

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   322236009|Paracetamol 500mg tablet|: 209999999104|Has trade name| = "PANADOL"

And the expression below represents an Irbesartan 150 mg tablet that is eligible for reimbursement through the national benefit scheme (of the given country).

318969005 |Irbesartan 150 mg oral tablet|: 859999999102 |Is in national benefit scheme| = TRUE

Please note that boolean and string-based concrete values should be used with caution. Care must be taken to only use these in situations in which the clinical meaning cannot be adequately defined using a concept value.

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