U.S. Stem Cell, Inc. announced earnings results for the second quarter and six months ending June 30, 2018. The company posted a revenue increase of 31% to $1.82 million, up from $1.39 million for the second quarter of last year. Profit margin for the second quarter also increased, to 69% from 67% for the same period last year. Gross profit increased by 34% to $1.25 million from $934,000 for the second quarter of prior year. Revenue also increased for the six months ended June 30, 2018, to $3.53 million, up 39% from $2.54 million for the same period last year. Profit margin for the first six months of this year increased to 70% from 68% in the first six months of 2017. Gross profit increased by 43% to $2.46 million from $1.73 million for the six-month period.