A laboratory technician performs an antibody titer. A reaction is detected in every dilution from 1:2 up to and including 1:64. What does this tell the technician about the amount of antibody present? Answers: A-D A The antibody is able to detectably bind all the antigen present in a sample when the concentration of antibody is at a 1:64 dilution. B There is enough antibody in the serum to react visibly with antigen when diluted 64-fold, but not at 128-fold or more. C The amount of antibody in the original sample can be calculated by multiplying 64 by the total number of tubes used in the dilution. D All of the above: O O

A phlebotomist gets a needlestick from a patient with known hepatitis B viral infection. The best immunoassay test to detect newly acquired disease in the phlebotomist is to measure the hepatitis B surface antigen within the first 3 months of the encounter.   Question 3 options:   True   False

The best immunoassay test to measure immune status for vaccination or recovery from infection from hepatitis B virus is the hepatitis B surface antigen antibody (anti-HBsAG).   Question 10 options:   True   False

a) Lysine is an essential amino acid. It is taken by some people as a nutritional supplement in the form of a hydrated crystalline solid with the formula C6H₁4N2O2.XH₂O . To control the dose of lysine, it is essential to know the complete formula of the hydrate, which means determining the value of x. To determine the value of x in lysine hydrate, a pharmacist used a direct titration method. She dissolved 6.258g of the compound in approximately 100mL of distilled water and then made this up to 250mL in a volumetric flask. She then titrated 25mL aliquots of this solution with a standardized NaOH solution of concentration 0.1050 mol dm-³, obtaining a mean titre of 36.30 mL. In titrations, lysine behaves as a monoprotic acid. Use these data to determine the value of x in lysine hydrate. b) In a second experiment to verify the value of x, the pharmacist heated a 3.752g sample of the lysine hydrate to drive off all the water. When she reweighed the sample, the mass was 3.278 g. Use this…

Neonatal bilirubin samples are especially vulnerable to UV light degradation due to their small sample volume.   Question 9 options:   True   False

q41 IF YOU DO NOT KNOW THE ANSWER PLEASE DO NOT REJECT IT please calculate the unknown concentration of the protein D wih an absorbance value of A412 given the standard curve indicated in the table. write your answers in numbers only with 2 decimals. protein concentration (ug/ml) absorbance 0 0.000 0.02 0.161 0.04 0.284 0.06 0.438 0.08 0.572 0.10 0.762

you have a 11.5 mg sample of blood that contain various proteins. Hemoglobin is only protein containing Fe. Hemoglobin is 3.3% of compund C34H32FeN4O4. 11.5 mg blood sample contains 34.7 micrograms of Fe. What is mass % of hemoglobin in protein sample?

Please help me calculate this: I have a protein sample that has the concentration of 0.30835 µg/ml. I need a target protein that is 10 µg with a final volume of 30 µl. I am instructed to dilute as a 1/10 or 1/20; my volume of my protein cannot exceed 30 µl but cannot be less that 1.0 µl.

Don't give handwritten answers please name the two compounds shown in the image

Question: Why are we using this materials in the experiment is there any reason why we using it? Quantification of Total Protein in Serum Experiment; Materials: Fatty acid free beef albuminl solution: 100 g / L Reagent Ⅰ Sodium potassium tartrate 9g / LSodium hydroxide 0.2 mol / L         Potassium iodide 5 g / L Reagent Ⅱ Serum from blood   Copper sulphate solution: 150 g / L   Working solution: 5 ml of reagent copper sulphate solution is prepared by mixing into 1 L of reagent Ⅱ. This reagent is stable for 6 months at 2-8 ° C Procedure: *Three test tubes are taken. These are marked as blank, standard and sample tubes.*Only 5 ml of working solution is put into the blank tube.*0.1 ml reagent I and 5 ml working solution are put into the standard tube.*0.1 ml of serum and 5 ml of working solution are put into the sample tube.*After mixing each tube separately, it is waited for 30 minutes at room temperature and measured at 545 nm in the spectrophotometer.*Color permanence is…