There is no need to draw blood from their arms to diagnose an age issue with the Yankees.

Derek Jeter prefers to look at the average age of the Yankees’ projected Opening Day lineup — an MLB high 32.9 — as one that offers an ocean of experience.

Yet, from the first spring training workout this week in Tampa until the final out of the season, age will be a hot topic.

According to Elias Sports Bureau, the average age of the 30 MLB teams’ Opening Day lineups across the last 10 years is 29.7. At 32.9 the Yankees are 3.2 years above that.

The Phillies and Rangers are next with averages of 30.9 and 30.6 years, respectively, in their projected lineups.

The lineup houses 39-year-old Ichiro Suzuki, 38-year-old Jeter, Travis Hafner at 35 and a 34-year-old Kevin Youkilis, but the pitching staff makes them look like neophytes.

Mariano Rivera is 43. Andy Pettitte will be 41 in June. Hiroki Kuroda’s 38th birthday is today.

Injuries and age can’t be separated. Just ask the Knicks, whose roster is the oldest in the NBA. Veterans Rasheed Wallace, Marcus Camby and Jason Kidd have missed time due to injuries.

Of course, youth doesn’t guarantee good health.