Plasma Proteins Flashcards
Time for clot retraction
1-2 hours
3ml of blood gives ____ ml serum
1
What is serum
Defibrinated plasma
Lacks coagulation factors Inc prothrombin and fibrinogen
Total protein content of normal plasma
6-8g/100ml
A
G
F
Levels
3.5 -5 g/dl
2.5-3.5g/dl
200-400 mg/dl
A:G
1.2:1 - 1.5:1
Synthesis of plasma proteins
In liver
Except immunoglobulins
Fibrinogen is pptd by
10% sodium sulfate
Globulins pptd
22% sodium sulfate
Ammonium sulfate will ppt
Globulin - half saturation (solution)
Albumin - full saturation (crystals)
In clinical laboratory total proteins in serum or plasma of patients are estimated by
Biuret method
Albumin Is qhantitated by
Bromocresolgreen method in which dye is preferentially bound w albumin and the color is estimated colorimetrically
Separation of plasma proteins in clinical laboratory
SPE
SPE (6)
Electrophoresis - movement of charged particles through an electrolyte when subjected to an E.
Anions migrate from negative (cathode) to positive pole (anode)
Rate of migration depends on charge and mol.wt
5 fractions usually separated by SPE
Albumin having max negative charge and least molecular weight migrates maximum
5 fractions are qhantitated by scanning and measurement of their intensity