PAP -LBC (Liquid based cytology)


LBC kit includes:-
1.slides coated with adhesives
2. Cell separator solution.
3.slide holder and bush
4. Disposable graduated pipettes
5.sample container with preservative
6. Cyto brush with detachable head with bristles.
Sample is preserved in the fixative which is pre-filled by manufacturer.

Smear preparation for PAP-LBC:-
1. Sample received
2. 4 ml of cell separator solution is taken in graduated conical centrifuge tube.
3. 7ml of sample (well mixed) is poured into the tube by making low angle as they should not mix-up before centrifugation.
The total volume will be 11 ml.
4. Spin the tube at 1500-2000 rpm for 10-15 minutes.
5. Discard the supernatant and resuspend the sediment
6. Place the slide in slide holder and lock the bush by pushing lightly and rotating.
7. Put 100ul D/w and 100ul resuspend sediment // 200ul D/W +50ul of sample.
{The quantity of D/W and sample can be changed according to the thickness required for the smear.}
8. Tap slightly to evenly distribute the sample and put it in the centrifuge specially designed for LBC at 2000 rpm for 2 minutes.
9.  Remove the slide and wash in running tape water.
10. Fix the slide at least for 2 minutes in ethyl alcohol or isopropyl alcohol.
11. Remove the slide and keep in rack for complete drying.
Staining:-
Rapid PAP- staining kit contains
1. Nuclear stain
2. Cytoplasmic stain
3. Xylene
4. Cover slip
5. DPX mountant

Steps:-
1. Put the dried slides in the nuclear stain jar for 3-4minutes .
2. Wash in running tape water.
3. Put the slides in nuclear stain jar for 3-4 minutes .
4. Wash in running tape water.
5. 1-2 dip in alcohol for dehydration
6. Allow it to dry in air
7. Dip in xylene  and mount the smear using DPX.
   and  Observe under microscope .

Result:-
Nucleus:-       blue
Cytoplasm: - varying  shades  of  pink, blue, yellow green -grey



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