C159315Level 9

FEV1% REF Pre-Bronchodilator

**Semantic type:** Diagnostic Procedure

**Definition:** The test for pre-bronchodilator lung forced expiratory volume 1 test lab percentage value.

**Synonyms:** - FEV1% REF pre-bronchodilator (Pre- Bronchodilator Lung Forced Expiratory Volume I Test Lab Percentage Value) - fev1 ref pre bronch percent - fev1_ref_pre_bronch_percent

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