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PNEUMOCYSTIS JIROVECII (FORMERLY P. CARINII) MICROSCOPY

Synonym(s):
Lab Section Category
View write-up
Specimen Required

Induced sputum samples are collected by pulmonary function or respiration therapy staff after patients have used appropriate cleansing procedures to reduce oral contamination.

It must be correctly done by well-trained staff using 3% sodium chloride solution.

The induced sputum sample is often mucoid and salivary in appearance and is less sensitive than BAL in general. 

Organisms are rarely detected in expectorated sputum

Method

Methenamine silver stain

Test Results

Pneumocystis jirovecii seen;
No Pneumocystis jirovecii seen

Turnaround Time

​4 – 48 hours

Day(s) Test Set up

Monday – Friday (8am – 5pm)

Saturday, PH Eve (8am - 11 am)

*Excluding Public Holidays

Last Updated - 20 Aug 2026