The majority of seats on most of these airlines can be reserved at. no charge, either during booking or check-in. Booking a pre-assigned premium. seat (including exit rows and window and aisle seats near the front of the. aircraft) will incur a surcharge. Elite frequent-flyer members are usually. exempt.
Answer by Deb Answers. Confidence votes 84.9K. Amorphous Urates indicates uric acid crystals in the urine. Higher than acceptable levels of uric acid crystals in urine can be caused by gout, Lesch-Nyhan syndrome, cardiovascular disease, diabetes, uric acid stone, urolithiasis, and metabolic syndrome.
3-16. Amorphous phosphate, triple phosphate (ammonium magnesium phosphate), calcium phosphate, and ammonium urate crystals are frequently found in alkaline urine specimens. The phosphates are all soluble in acetic acid and may be differentiated from other crystals by this characteristic.