Lactate 3.4 .
 the patient has an elevated lactate
(ROOT (NP (NP (NN Lactate) (CD 3.4)) (. .)))
(ROOT (S (NP (DT the) (NN patient)) (VP (VBZ has) (NP (DT an) (JJ elevated) (NN lactate)))))
( ( Lactate 3.4 ) . )
( ( the patient ) ( has ( an ( elevated lactate ) ) ) )