Xenoport (Nasdaq: XNPT) is expected to report Q1 earnings on April 24. Here's what Wall Street wants to see:

The 10-second takeaway
 Comparing the upcoming quarter to the prior-year quarter, average analyst estimates predict Xenoport's revenues will drop -92.3% and EPS will remain in the red.

The average estimate for revenue is $.8 million. On the bottom line, the average EPS estimate is -$0.43.

Revenue details
 Last quarter, Xenoport booked revenue of $.5 million. GAAP reported sales were 91% lower than the prior-year quarter's $5.4 million.

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

EPS details
 Last quarter, non-GAAP EPS came in at -$0.39. GAAP EPS were $0.07 for Q4 compared to -$0.48 per share for the prior-year quarter.

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

Recent performance
 For the preceding quarter, gross margin was -1956.7%, much worse than the prior-year quarter. Operating margin was -3480.7%, much worse than the prior-year quarter. Net margin was 624.6%, much better than the prior-year quarter.

Looking ahead

The full year's average estimate for revenue is $13.6 million. The average EPS estimate is -$2.07.

Investor sentiment
 The stock has a two-star rating (out of five) at Motley Fool CAPS, with 172 members out of 209 rating the stock outperform, and 37 members rating it underperform. Among 44 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 30 give Xenoport a green thumbs-up, and 14 give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on Xenoport is outperform, with an average price target of $11.29.