The new South Glasgow Hospital Campus will open in 2015
Health officials have been told to improve the standard of cleanliness at Glasgow's Southern General Hospital.
A report by the Healthcare Environment Inspectorate said more consistency was needed in cleaning procedures along with better communication over repairs.
The inspectorate report also commended NHS Greater Glasgow and Clyde (GGC) for its work in preventing infection.
The Southern General is to be replaced by a £840m New South Glasgow Hospital Campus by 2015.
The inspection was carried out at the Southern General Hospital in March.
Commenting on the report, Health Secretary Nicola Sturgeon said: "Our top priority is to continue to do all we can to protect patients from the risk of health acquired infections.
"Within the next few years, Glasgow will have a fantastic flagship facility at the new South Glasgow Hospital campus.
"However, until it comes on stream there is the urgent need to maintain a safe patient environment within the existing facilities."
NHS Greater Glasgow and Clyde has published an "improvement plan" to address the issues raised in the report.
The health board has also assured the health secretary "that all of the areas for improvement identified are being dealt with swiftly".
Rory Farrelly, NHS GGC's acute director of nursing, said: "The inspection report is very helpful to us in identifying further areas where we can improve our service at the Southern General.
"We are already addressing as a priority both the requirements and the recommendations made in the report and have agreed an action plan to achieve this.
"We are very pleased that the inspectors noted areas of good practice within their report."