Department of Laboratory Medicine and Pathology

Cytopathology Specimen Collection Guidelines

Photo of PAP stain 1
Gyn Pap Smear

Photo of Leiomyoma
Leiomyoma

Photo of PAP stain 3
Radiation Changes

A. General Specimen Collection Techniques

    Fixatives:

1. Prepared Slides:

  a. Spray fix with commercially available spray fixative (e.g., "Pap" smears, Fine Needle Aspirations (FNAs); or
b. Immediately immerse slides in 95% ethyl alcohol (e.g., direct sputum smears and FNAs); and/ or
c. Air dry slides (e.g., FNAs; consult with the pathologist before using this option).

Precaution: It is very important that prepared slides are labeled with the patient's name and origin of the specimen for proper identification in the laboratory.

2. Fluid Specimens:
 

a. Mix the specimen with an equal volume of 50% ethyl alcohol; or
b. Submit the specimen fresh and unfixed only when the specimen can be delivered to the laboratory within 2-3 hours.

Important: Fresh specimens should be refrigerated to slow cell degeneration and bacterial growth.

Precaution: It is very important that specimen containers be labeled with the patient's name and origin of the specimen for proper identification in the laboratory.

DO NOT SUBMIT SYRINGES WITH NEEDLES ATTACHED

Note: All specimens submitted to Cytopathology must be accompanied by a Cytopathology Examination Form accompanied with the "patient's identification" including name, date of birth, and hospital medical record number. The following information must be provided: name and telephone number of the submitting physician, date the specimen was collected, anatomic site of the specimen, previous/ current therapy and essential history and clinical information. In addition, for gynecological specimens: date and normalcy of last menstrual period, duration of current pregnancy, menopausal status, hormonal administration and pertinent clinical history must be included.

B. Specific Specimen Collection Techniques

1. Ascites - See "Body Cavity Fluids"

2. Aspiration Cytopathology - See " Fine Needle Aspirates" (FNA)

3. Body Cavity Fluids - [peritoneal (ascites), pleural, pericardial, cyst fluids, joint fluid, miscellaneous fluids]: 5-10 units of heparin per 1cc of fluid should be in the syringe as the fluid is withdrawn to prevent clotting.

4. Breast - see "Fine Needle Aspirates" (FNA)

5. Bronchial Washings - It is mandatory that all of the material collected be placed in alcohol fixative without delay unless immediate processing is available. Specimens should be mixed with an equal volume of 50% ethyl alcohol. Fresh unfixed specimens should be refrigerated at 4°C.

6. Bronchial Brushing - Prepare thin smears on clear (non frosted) glass slides that have been labeled with the patient's identifying information and immediately immerse in 95% ethyl alcohol or spray fix (see above). Air drying of the slides should be avoided.

7. Cerebral Spinal Fluids - The volume of the sample has considerable bearing on diagnostic accuracy: the larger the sample, the better the results. If several samples are obtained, the second or the third should be used for cytopathology. Fresh, unfixed specimens should be refrigerated and submitted to the laboratory immediately. The addition of an equal amount of 50% ethyl alcohol to the sample is recommended if a delay in delivery and/ or processing is anticipated. If there is a clinical history or suspicion of hematopoietic disease, an unfixed sample is preferable and the clinician should inform the supervisory personnel of the cytopathology laboratory.

8. Cervical Smears - See " PAP Smears

9. Colonic - See " Gastrointestinal Specimens"

10. Cystoscopic or Catheterized Urine - see "Urine"

11. Endocervical Smears - see PAP Smears.

12. Fine Needle Aspirates (FNA) - For superficial masses, the attending pathologist is available to perform the aspirates. Arrangements can be made by calling the Cytopathology Service at 612-347-3084. Clinicians who wish to learn the proper aspiration techniques for superficial masses or organs may contact Dr. Ricardo Bardales (beeper 612-336-0217 or 612-347-5669 for personalized instruction.

 

a. Solid lesions: prepare direct smears from needle (see below) and immerse them immediately into 95% ethyl alcohol or spray fix. In certain clinical settings it may be preferable to air dry some or all of the slides prepared. After the slides have been prepared, rinse the needle and syringe with 95% ethyl alcohol and submit the fluid with the slides for evaluation.

b. Cystic lesions and nipple discharges: use the method described below under "Handling of Fluids Obtained for Aspiration". The Cytopathology Services offers assistance for radiographically directed aspirates (CT scan, fluoroscopy, ultrasound) of deep organs. Contact Cytopathology Services, 612-347-3084 or Dr. R. Bardales (beeper 612-336-0297).

13. Gastrointestinal -(e.g., colonic, duodenal, esophageal, gastric specimens)
 

a. Brushings: prepare thin smears on labeled clear (non frosted) glass slides and immediately spray fix or immerse in 95% ethyl alcohol. Air drying of the slides is inappropriate for this specimen type.

b. Washings: mix the volume with an equal volume of 50% ethyl alcohol unless immediate processing is available.

14. Lymph Node Aspirate - See FNA. Discuss with the pathologist before the aspirate is performed to determine which slide preparation is best for the specific clinical setting in question.

Note: Immunophenotypic studies by flow cytometry and/ or immunoperoxidase can be performed on FNA material. Consult the Cytopathology Service for further assistance.

15. PAP Smears - (gynecological cervical, endocervical and vaginal smears). It is important that smears be made from material collected from the squamo-columnar junction. Two smears, one from the exocervix and one of the endocervical canal are preferred. Prepare thin smears on labeled clear (non-frosted) glass slides and immediately spray them with a commercial spray fixative or immerse in 95% ethyl alcohol before air drying occurs.

It is important that the slides are properly labeled with the patient's name and site of origin for proper specimen identification in the laboratory. Slides that are not labeled with the patient's name will be rejected for evaluation.

  a. Hormonal Evaluation - gently obtain material from the upper third of the lateral vaginal wall. Prepare slides and fix as noted above. The slide should be identified as to origin. The LMP must be submitted.
Note: A maturation index cannot be given in the presence of endocervical elements (endocervical cells, squamous metaplasia), an inflammatory process, CIN (dysplasia), or carcinoma.

Precaution: Do not use lubricants in examining the patient before the specimen is taken or on any instruments used to obtain the specimen. It is not recommended that specimens be taken within 24 hours after a douche, or 6-8 weeks after biopsy, curettage, cone biopsy or cauterization. Do not take specimens before 6 weeks post partum. Not indicating the above conditions on the request slip may impede correct interpretation of the specimen. Please provide all pertinent clinical information on the request slip including the date of the last menstrual period, age, use of IUD, or hormonal therapy.

16. Liquid-based PAP Smear: Using the plastic spatula from the collection kit, rotate in the ectocervix. Rinse spatula quickly into PreservCyt vial by swirling vigorously. Insert endocervical brush in to the cervix until only the bottom most fibers are exposed. Slowly rotate one 1/2 turn in one direction. Do not over rotate. Rinse brush quickly in the same PreservCyt solution by rotating the brush 10 times while pushing against the vial wall. Swirl brush vigorously to further release material. Tighten the cap onto the vial. Label with patients first and last names.

17. Sputum - Three day early morning pooled deep cough specimens or three separate daily early morning deep cough specimens are acceptable. For assistance call the Cytopathology Service 612-347-3084.

18. Salivary Glands - See FNA

19. Thyroid - See FNA

20. Urine - Multiple voided urine specimens are invaluable in assessing the status of the lower urinary tract. Catheterized urine is acceptable. For cytological evaluation of the bladder three morning samples of urine each of about 50 to 100 mL, obtained on consecutive days are recommended.

C. Guidelines of Fine Needle Aspiration Biopsy Technique

These directions are intended for FNA of superficial masses, such as those occurring in the breast, lymph nodes, thyroid, subcutaneous tissues, and prostate. These masses are localized primarily by palpation.

Equipment:

1. Alcohol swabs, sterile gauze
2. 10cc slip tip syringes (not "Luer Lock")
3. 1 1/2 inch long 25 gauge needles
4. Syringe holder, 10cc (Cameco or equivalent)
5. Glass slides with frosted end (not totally frosted)
6. 95% alcohol
7. Coplin jars (or equivalent)

FNA consists of four coordinated steps:

1. Palpation
2. Aspiration
3. Smear preparation
4. Microscopy

In order to have an accurate interpretation, palpation, aspiration and smear preparation must be efficiently performed. These skills can be sharpened only by person to person instruction, and feedback from the pathologist.

1. Palpation

 

a. The target is localized and evaluated by palpating it between the tips of the index and middle fingers.

b. The target area is cleaned with an alcohol swab without removing the fingers.

2. Aspiration
 

(Needle is attached to syringe and placed in syringe holder)
a. Needle is inserted through skin rapidly, then carefully advanced into lesion.
b. Plunger is pulled back and held there.
c. Needle syringe combination is moved in a straight line back and forth motion 15 to 20 times.
d. Plunger is released before withdrawing needle.
e. Needle is withdrawn. Pressure applied with gauze over puncture site.
f. Needle is removed from syringe, plunger is pulled back to load syringe with air, and needle is reconnected.
g. Plunger is pressed down, expressing material from needle onto glass slide.

3. Smear Preparation
 

a. The glass slide containing the specimen is held with one hand; the smearing slide is held with the other.
b. The flat surfaces of the two slides are held parallel and touched together gently; the long axis of each slide is then moved along the specimen slide, making the smear.
d. The specimen slide is immersed immediately into 95% alcohol.
e. Smearing slide may be fixed in alcohol or air dried. The specimen may also be divided into two or more parts with special techniques.

D. Handling of Fluids Obtained by FNA (breast cysts, thyroid cysts, etc.)

1. Prepare two or more slides by placing a small drop of fluid on each slide and making smears as described above.
2. Unless the fluid can be processed immediately, it is mixed with an equal volume of a suitable fixative and submitted to the laboratory (a good fixative is 50% ethanol).

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