The routine kidney blood test is a general marker of kidney function. If the blood test is abnormal it cannot say what is causing the kidney problem. Therefore, if you have an abnormal result you may need further tests to find the cause of a kidney problem.
A unit can mean an apartment, villa, or home unit. In the sense of an apartment, it refers a situation where a group of apartments are contained in one storey or multi-storied building. If the unit is taken as to mean villa unit or a home unit, we are talking about one or many single storey buildings. These buildings are arranged around a driveway. One of the main differences between a unit and a townhouse is that a unit gives more importance to the building. Hence, it is understood for sure that a unit need not be a terraced one. In some countries, you can find units too in a terraced fashion.
Townhouse vs Villa. Townhouse and villa are two different types of abode. A townhouse is a terraced residential building whereas a villa consists of a large central building with all amenities surrounded by warehouses, stables and the like according to the Roman construction of a villa. villa need not be in the terraced style. Most famous villas built in the Roman style were not in the terraced fashion. A villa is normally surrounded by beautiful gardens and landscapes whereas a townhouse is generally not surrounded by gardens or breathtaking landscapes.