Free Trans-3'-Hydroxycotinine Measurement

**Semantic type:** Laboratory Procedure

**Definition:** The determination of the free (unbound) trans-3'-hydroxycotinine present in a sample.

**Synonyms:** - Free 3-HC - Free 3HC - T3HXCTFR - Trans-3'- Hydroxycotinine, Free - Trans-3'- Hydroxycotinine, Free