'check up the' is not correct and usable in written English.
To use it as part of a sentence, you should use the phrase 'check up on': "I'll have to check up on him to see how he's doing."
At her 12 months check up, the lady was still highly satisfied with her situation.
In the following analysis, we assume that all receivers can estimate their received channel coefficients perfectly to exploit the ideal performance and check up the theoretical feasibility of our proposals.
The researchers can then check up the recordings with the system afterward to review and pinpoint every single symbol, comment, and correction marked on the compositions and the verbal description reporting what the participants had in mind during the marking process.
Always check up the reputation of your SEO agency.
One can also say, with CMS2CMS you can try free demo migration to the test site, and check up the new look of your WP site with free premium themes.
She was back inside ten minutes, checking up the order.
Later, in checking up the telephone number, I found that Stagg 3060 was in a drugstore at 292 Leonard Street.
However, the best way to check corrosion is by visual inspection and checking up the material degradation periodically.
The "exam," checking up on the installed seat, came at the end of Steve's training.
Make sure the person checking up on the rat(s) knows what to do.
