If the test results from your sputum Gram’s stain are abnormal, it means that bacteria and white blood cells have been detected. The bacteria found will be Gram-positive or Gram-negative.

A sputum stain for Mycobacteria is a laboratory test performed on a sample of your sputum, or phlegm. It’s also known as an acid-fast bacillus (AFB) stain or a tuberculosis (TB) smear. A doctor ...

Musher DM et al. Diagnostic value of microscopic examination of gram-stained sputum and sputum cultures in patients with bacteremic pneumococcal pneumonia. Clin Infect Dis 2004 Jul 15; 39:165-9.

Seventy-nine samples (65.3%) contained a predominant bacterial type seen on Gram's stain, but a viable bacterial species was cultured from 86 samples (71.1%).

To determine the effectiveness of Gram staining of tracheal aspirates for predicting causative microorganisms and guiding appropriate initial antibiotic therapy to treat ventilator-associated ...

Matthew E. Levison, Donald Kaye, Pneumonia Caused by Gram-Negative Bacilli: An Overview, Reviews of Infectious Diseases, Vol. 7, Supplement 4. Gram-Negative Aerobic Bacterial Infections: A Focus on ...

The Gram stain–AOLC was positive in only two patients (7.6%) with a CRBI. Our results suggest that the Gram stain–AOLC test is not useful for the diagnosis of catheter-related bloodstream ...