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Test Code MISCEO Eosinophil Smear LAB2427

Test Method

Direct Smear; Wright-Giemsa Stained


Same day as the specimen arrives at the testing site.

Useful For

Detection of Eosinophils in clinical specimens.

Specimen Requirement

Nasal, sputum, sinus or urine are required.

CPT Code Information

89190 Other Pathology Services: Nasal smear
for eosinophils 

Reference Values

Not established. Results are subject to interpretation by the

LOINC Code Information

30378-4 Eosinophils/100 leukocytes in Nose

Additional Specimen Collection Information

Nasal: Collection of specimen may be taken from each side of the
nose by swabbing with a cotton applicator. Secretion is most easily
collected by having the patient blow the nose on waxed paper or

Sputum: Collect specimen via one of the following

Deep Breathing and

  1. Obtain in early morning.
  2. Have patient rinse out mouth with water, if allowed.
  3. Instruct the patient to take a deep breath and blow it out;
    take another deep breath, hold it, and cough deeply.
  4. Expectorate mucous into a sterile container or luki tube.
  5. Label appropriately [including source, date and time of

Ultrasonic or Heated
Hypertonic Saline Nebulization:

  1. respiratory therapist will assist the patient with deep
    breathing treatment for 10 to 15 minutes to aid in loosening
  2. Follow collection procedure for deep breathing and

Suctioning with Use of Sputum

  1. Prepare suction equipment.
  2. Attach sputum trap between catheter and suction tubing.
  3. Provide intermittent suction by placing thumb on and off sputum
    trap until adequate specimen is collected.
  4. When specimen reaches the trap, keep thumb over opening until
    suction is turned off.
  5. Disconnect suction tubing and close opening with small rubber
    tubing connected to luki tube.
  6. Label appropriately [including source, date and time of

Sinus: Collected by physician.

Urine: Random urine collection.