Charles River Laboratories International (NYSE: CRL) reported earnings on May 1. Here are the numbers you need to know.

The 10-second takeaway
 For the quarter ended March 30 (Q1), Charles River Laboratories International met expectations on revenues and missed estimates on earnings per share.

Compared to the prior-year quarter, revenue expanded slightly. Non-GAAP earnings per share dropped. GAAP earnings per share contracted.

Margins shrank across the board.

Revenue details
 Charles River Laboratories International booked revenue of $291.2 million. The 11 analysts polled by S&P Capital IQ expected sales of $294.5 million on the same basis. GAAP reported sales were the same as the prior-year quarter's.

Source: S&P Capital IQ. Quarterly periods. Dollar amounts in millions. Non-GAAP figures may vary to maintain comparability with estimates.

EPS details
 EPS came in at $0.69. The 15 earnings estimates compiled by S&P Capital IQ anticipated $0.71 per share. Non-GAAP EPS of $0.69 for Q1 were 1.4% lower than the prior-year quarter's $0.70 per share. GAAP EPS of $0.53 for Q1 were 1.9% lower than the prior-year quarter's $0.54 per share.

Source: S&P Capital IQ. Quarterly periods. Non-GAAP figures may vary to maintain comparability with estimates.

Margin details
 For the quarter, gross margin was 35.8%, 60 basis points worse than the prior-year quarter. Operating margin was 14.7%, 90 basis points worse than the prior-year quarter. Net margin was 8.8%, 40 basis points worse than the prior-year quarter. (Margins calculated in GAAP terms.)

Looking ahead
 Next quarter's average estimate for revenue is $296.6 million. On the bottom line, the average EPS estimate is $0.77.

Next year's average estimate for revenue is $1.17 billion. The average EPS estimate is $2.85.

Investor sentiment

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on Charles River Laboratories International is hold, with an average price target of $45.91.

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