A Welsh international, he made his first senior Gloucester appearance as a replacement against the Worcester Warriors in the Guinness Premiership in January and will now remain at Kingsholm until the end of the season.
With Gloucester heading towards the business end of their campaign, Head Coach Bryan Redpath knows that strength in depth will be critical.
"Rory Lawson is currently with Scotland and Jordi Pasqualin will be with the England U20s squad during their Six Nations campaign so we were looking a bit thin at the position."
"Andy's an experienced campaigner. He's an international who has also played a significant amount of Heineken Cup rugby so he knows all about performing at the highest level."
"He will be with us initially until the end of the season and we'll see where things go from there."