1 of 3 things: Hi. If your TSH is 0.344, which is just slightly below the normal range, it could be: 1) normal, no thyroid disease (the normal range EXCLUDES 5% of normal values), 2) mildly hot (autonomously hyperfunctioning) nodule (s), or 3) your doctor checked it while it was heading down.
Rat urine, like human urine, can vary in different degrees. Normally, it will be a light yellow. If the rat is highly active, it will be taking in a lot of water. This may result in urine that is lighter or clear. This is absolutely normal in most circumstances. If the rat is drinking excessively and is not active, that could be a sign of trouble. Older or dehydrated rats may have darker urine.
Turbidity and other terms are used to characterize the appearance of a urine specimen. Urine may contain red or white blood cells, bacteria, fat, or chyle and may reflect renal or urinary tract infection. Some drugs can change the color of the urine. Normal urine color is a light yellow to a dark amber color. Inflammation may also cloud the urine as well as other pathological conditions can. Dorban can color the urine red; phenolphthalein can color it red; pyridium can color the urine dark orange.