Ideal blood pressure is categorized as normal. Increased blood pressure may be categorized as elevated, stage 1 or stage 2 depending on the specific numbers. A diagnosis of high blood pressure is usually based on the average of two or more readings taken on separate visits.
A higher than normal concentration often is a result of not drinking enough fluids. Protein. Low levels of protein in urine are typical. Small increases in protein in urine usually aren't a cause for concern, but larger amounts might indicate a kidney problem. Sugar. The amount of sugar (glucose) in urine is typically too low to be detected.
A Beginners Guide is a guide for beginners, and it could also be called a a Beginners' Guide, if you like apostrophes. Call it a Beginner's Guide and it's a guide for one beginner: if there were several beginners then they would each need one of such a guide. Now this class is for beginners.
Or for lots of beginners - hence a beginners' class? Or is "beginners" an attribute of the class - hence a beginners class? The question was discussed at length in an other thread about a woman's college, and baby oil came into it as well. As the themes are so close, I'll move this thread to the end of the previous one, and change its name.
Possessive - Woman’s college - Baby oil - Beginners class - singular ...
At any rate, beginners are usually looking for an approximation in their native language...and this analogy is helpful. These speakers develop further accuracy through practice and contact with native speakers.