Former first lady Betty Ford returned to her desert home Friday after an overnight stay at Eisenhower Medical Center for undisclosed tests, a Ford family spokeswoman said.

Mrs. Ford, who turned 88 on March 27, had an appointment for tests Thursday afternoon, spokeswoman Penny Circle said.

"Mrs. Betty Ford remained in Eisenhower Medical Center overnight following tests late on Thursday afternoon. She has returned home and will resume a normal schedule," Circle said Friday morning.

There were no details about what the testing involved. Circle said Mrs. Ford has been in good health and there was nothing to be concerned about.

Former President Gerald Ford, who was hospitalized 12 days in January with pneumonia, remained at the couple's Thunderbird Estates home about a mile from the medical center. Circle said he was doing well.

Ford, 92, returned home from Eisenhower on Jan. 25 after hospitalization for pneumonia.

The nation's oldest living former president and his wife have lived in Rancho Mirage since leaving the White House in 1977.