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Red blood cell concentrates, also known as red cell concentrates or packed red blood cells, are red blood cells that have been separated for blood transfusion. [1] A red blood cell concentrate typically has a haematocrit of 0.50 – 0.70 L/L and a volume between 250 and 320 mL.
It is not possible for the kidneys to produce urine with a specific gravity greater than 1.040 [40] but such readings can occur in urine that contains high-molecular weight substances, such as contrast dyes used in radiographic imaging. [38] Specific gravity is commonly measured with urine test strips, but refractometers may also be used. [41]
In a typical set of rules, a platelet donor must weigh at least 50 kg (110 lb) and have a platelet count of at least 150 x 10 9 /L (150,000 platelets per mm³). [2] One unit has greater than 3×10 11 platelets. Therefore, it takes 2 liters of blood having a platelet count of 150,000/mm³ to produce one unit of platelets.
Reference ranges for urine tests are described below: Measurement Lower limit Upper limit Unit Urinary specific gravity: 1.003 [1] [2] 1.030 [1] [2] g/mL Urobilinogen ...
If any of these are present, it is appropriate to repeat a urinalysis with urine microscopy in 1 to 2 weeks or after treatment of the infection. [6] [3] If the results of the urinalysis and urine microscopy reveal a glomerular origin of hematuria (indicated by proteinuria or red blood cell casts), consultation with a nephrologist should be made ...
Conditions involving low output of urine are oliguria (< 400 mL/day) and anuria (< 100 mL/day). The first step in urine formation is the filtration of blood in the kidneys. In a healthy human, the kidney receives between 12 and 30% of cardiac output, but it averages about 20% or about 1.25 L/min.
Hemolytic–uremic syndrome (HUS) is a group of blood disorders characterized by low red blood cells, acute kidney injury (previously called acute renal failure), and low platelets. [1] [3] Initial symptoms typically include bloody diarrhea, fever, vomiting, and weakness. [1] [2] Kidney problems and low platelets then occur as the diarrhea ...
Unit Comments Thrombocyte/Platelet count (Plt) 140, [15] 150 [5] [14] 350, [5] [23] 400, [14] 450 [15] x10 9 /L or x1000/μL: Mean platelet volume (MPV) 7.2, [147] 7.4, [148] 7.5 [149] 10.4, [148] 11.5, [149] 11.7 [147] fL: Prothrombin time (PT) 10, [18] 11, [14] [150] 12 [15] 13, [18] 13.5, [150] 14, [15] 15 [14] s: PT reference varies between ...