If albumin is detected in a urine sample collected at random, over 4 hours, or overnight, the test may be repeated and/or confirmed with urine that is collected over a 24-hour period (24-hour urine).
Say, for my $20 pedicure, I gave $3 tip to my foot scrubber and leg massager/toenail painter. The 2 ladies I went with gave nothing. It felt awkward, but my husband having worked in the restaurant and retail worlds, insists we tip due to personal experience. If your facial is $40, tip $6-$10. I average on an 18% scale, but 15-20% is perfectly acceptable and very generous. For mother's day, we give my mom a hot stone massage and a pedicure. We always send her with $25-$30 extra for tips.
Personally I find that the more work is done on my hair and the more it will cost me, the more tips I will leave. A simple haircut might lead to 10-12% (e.g. for a $40 haircut I usually leave $5 extra). On the other hand when my hairdresser has spent several hours on color, highlights and styling, I do tip her better because I know that she deserves it.