Estimation of Serum Albumin by BCG Method || Bromo Cresol Green Method || Biochemistry Practical

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  • เผยแพร่เมื่อ 12 ก.ย. 2024
  • Estimation of Serum Albumin by Bromo Cresol Green (BCG) Method - This is the video on estimation of serum albumin by BCG with demonstration and discussion of viva questions.
    it contains
    Introduction to Albumin - 00:40 minutes
    Normal Ranges of Plasma Proteins - 01:32 minutes
    Functions of Albumin - 02:28 minutes
    Maintenance of Colloidal Osmotic Pressure by Albumin - 03:43 minutes
    Principle of BCG method - 04:02 minutes
    Operational Procedure - 04:49 minutes
    Calculation of Serum Albumin - 05:40 minutes
    Determination of A/G ratio - 06:25 minutes
    Normal ranges of Albumin and A/G ratio - 07:06 minutes
    Causes of Hypoalbuminemia - 07:55 minutes
    Causes of Hyperalbuminemia - 08:32 minutes
    A/G ratio - 09:17 minutes
    Discussion of Viva Questions - 10:23 minutes
    Demonstration of Estimation of Serum Albumin by BCG Method - 12:05 minutes
    Albumin, globulins and fibrinogens are the major proteins present in blood / plasma.
    Alb is major constituent (60%) of plasma protein with conc. 3.5-5.0 g/dl.
    It is synthesized by hepatocytes; therefore estimation of albumin is a liver function test.
    Half-life of albumin is about 20 days.
    Plasma protein = albumin + globulin + fibrinogen
    Serum= plasma (alb + glb) - fibrinogen
    Total Protein=6.5-8.5 g/dl
    S.Albumin =3.5-5 g/dl
    S.Globulin =2.5-3.5 g/dl
    Fibrinogen =200-400 mg/dl
    A/G Ratio =1.2:1 to 2.5:1
    Functions of Albumin
    1. Maintenance of colloidal osmotic pressure.
    2. Role in transport-act as carrier for hydrophobic substance
    (bilirubin, non-esterified FA, drugs(sulfa,aspirin,dicoumarol), hormones(steroid,thyroxine), metals(copper,calcium & heavy metals) etc)
    3. Maintenance of acid base balance
    (buffering action of protein-alb has 16 histidine residue which contribute to buffering action)
    4.Nutritional function
    ( complete protein as it contain all essential AA, serve as AA sources & contribute to protein synthesis during period of starvation)
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