Mumbai: The integration of a recently acquired critical care business in the US and the expansion of its domestic diagnostic business helped Piramal Healthcare Ltd post a 44.8% rise in net profit to Rs100 crore in the September quarter. Revenue rose 16% to Rs1,000 crore from a year earlier. The company posted a decline in revenue to Rs270 crore from Rs280 crore in the year-ago quarter in contract manufacturing business. It shut one of its contract manufacturing units in the UK during the quarter.