What is the procedure of Giemsa stain?
Method
- Deparaffinize and rehydrate through graded alcohols to water.
- Rinse in pH 6.8 buffered distilled water.
- Stain in working Giemsa, overnight.
- Rinse in distilled water.
- Rinse in 0.5% aqueous acetic acid until section is pink.
- Wash in tap water.
- Blot until almost dry.
What is Giemsa stain used for in histology?
Giemsa stain is performed on paraffin sections. It is used to stain the blood cells of hematopoietic tissues. It can also be applied to all tissue sections in which the presence of microorganisms is suspected. Gram + and Gram Bacteria are not differentiated with this staining.
What is the procedure for blood staining technique?
Procedure
- Weigh the required amount of powder stain, and transfer to a clean, dry 1litre capacity bottle.
- Measure and add glycerol and mix well.
- Place the bottle of stain in a water bath at 50-60°C or at 37°C for up to 2hours with frequent mixing.
- Label the bottle and store it in a cool, dark place with a firm stopper.
How do you stain a thin film with Giemsa?
Staining procedure 1: Thin Film staining
- On a clean dry microscopic glass slide, make a thin film of the specimen (blood) and leave to air dry.
- dip the smear (2-3 dips) into pure methanol for fixation of the smear, leave to air dry for 30seconds.
- Flood the slide with 5% Giemsa stain solution for 20-30 minutes.
How do you prepare a solution of Giemsa stain?
Therefore, 4.5 mL of Giemsa stock solution should be mixed with 40.5 mL of buffered water to prepare the required amount of 10% Giemsa working solution for staining 15 individual blood films.
What are the two methods for Giemsa staining?
The two methods for staining with Giemsa stain are the rapid (10% stain working solution) and the slow (3% stain working solution) methods. The rapid (10% stain working solution) method This is the commonest method for staining 1–15 slides at a time.
How do you prepare Field stain A and B?
Staining Procedure for Field Stain A and B:
- Fill up two Coplin jars or wide-mouth bottles:
- Make a blood smear on a clean glass slide, and it is dried in the air.
- Fix in methanol for one minute or get Spray ‘Easyfix’.
- Dry in the air.
- Dip fixed smear to Field Stain B (Red Stain) for 5 to 6 seconds.
What is the optimum pH for staining with Giemsa?
In order to make an accurate diagnosis of malaria, it is essential that blood films be stained with good-quality preparations of Giemsa stock solution and buffered water at pH 7.2.
What is Field stain A and B?
Field’s stain consists of two parts – Field’s stain A is methylene blue and Azure 1 dissolved in phosphate buffer solution; Field’s stain B is Eosin Y in buffer solution. Field stain is named after physician John William Field, who developed it in 1941.
How do you make a 5% Giemsa stain solution?
Stock Solution
- Dissolve 3.8g of Giemsa powder into 250ml of methanol.
- Heat the solution from step 1 to ~60oC.
- Slowly add in 250ml of glycerin to the solution from step 2.
- Filter the solution from step 3.
- The solution needs to stand a period of time prior to use.
What is difference between Leishman stain and Giemsa stain?
Although Giemsa staining is most commonly used, the Leishman staining method provides better visualization of the nuclear chromatin pattern of cells. It is less well known whether accuracy of parasitaemia assessment is equally accurate with the latter method.
What is the difference between Giemsa and Wright stain?
The main difference between Giemsa stain and Wright stain is that Giemsa stain is used to stain chromosomes to identify chromosome aberrations. But, Wright stain is used to differentiate blood cell types.
Why Leishman stain is used for WBC count?
The methanolic stock solution is stable and also serves the purpose of directly fixing the smear eliminating a prefixing step. Leishman stain is commonly used when there is need to examine the Blood smear for the Various blood cells, Differential Leucocyte count, Type of Anemia, Toxic Granules & Platelet count etc.
What is the principle of Field stain A and B?
The principle of Field’s stain is based on 2 steps: Field A dye consisting of methylene blue and azure 1 dissolved in phosphate buffer. Flied B dye composed of eosin Y in a buffer solution.
What is the composition of field stain?
How do you make 3% of Giemsa stain?
Popular Answers (1)
- Dissolve 3.8g of Giemsa powder into 250ml of methanol.
- Heat the solution from step 1 to ~60oC.
- Slowly add in 250ml of glycerin to the solution from step 2.
- Filter the solution from step 3.
- The solution needs to stand a period of time prior to use.