15 results
Tuberculosis Testing

LATENT TB
• LTBI is diagnosed when an asymptomatic patient has a positive TST or IGRA
(TST) False-negative ... TB AFB smear microscopy ... because false-negative ... Mycobacterial culture ... #Diagnosis #Workup
Diarrhea Workup and Management Algorithm in Transplant Patients
First Tier Microbiologic-Testing:
1. C. difficile PCR (Stool)
2. CMV qPCR
Diarrhea Workup ... Patients First Tier Microbiologic-Testing ... Bacterial culture ... pathogens First Tier Microbiologic-Testing ... negative and diarrhea
Moraxella catarrhalis on culture and microscopy
Only 1-5% of adults are colonized with this Gram neg diplococci
catarrhalis on culture ... and microscopy ... ) - Gram negative ... #catarrhalis #culture ... #microbiology
Disseminated Gonococcal Infection - Diagnosis and Management Summary

Bacteremic spread of the Gram-negative diplococci Neisseria gonorrhoeae. History
spread of the Gram-negative ... sets of blood cultures ... susceptibility testing ... typically part of the workup ... Diagnosis #Management #Microbiology
Acinetobacter baumanii on culture and microscopy
 - MacConkey agar - Lactose Negative
 - gram negative (often
and microscopy ... agar - Lactose Negative ... - gram negative ... #microbiology # ... culture
Gastrointestinal Evaluation of Iron Deficiency Anemia
In patients with anemia, diagnose iron deficiency if:
 • Ferritin <
Non-invasive testing ... endoscopy only if: • Negative ... population where identification ... Gastrointestinal #Evaluation #workup
Solid Organ Transplant - Diarrhea - Diagnostic and Workup Algorithm
1st Tier Microbiologic Testing: CDiff (stool), CMV
Diagnostic and Workup ... Testing: CDiff ... blood), Bacterial Culture ... Testing: Norovirus ... overgrowth If above negative
Capnocytophaga spp on Culture and Blood Smear
Associated w/ dog/human oral flora, can cause bacteremia in immunocompromised
Capnocytophaga spp on Culture ... pts From blood culture ... anaerobe; narrow Gram negative ... Smear #clinical #microscopy ... #microbiology
Important Fungal Stains
Mycology Lab:
 • Calcofluor white - Fluorochrome that binds glucans and chitin in fungal
preparation from culture ... • India ink - "Negative ... Fungal #Stains #microbiology ... #microscopy #staining ... fungi #fungus #comparison
Alternaria on Culture Plate and Microscopy
Adult w/ aplastic anemia, getting regular blood product infusions. Had Group
Alternaria on Culture ... Plate and Microscopy ... aplastic anemia, getting ... #Microscopy #clinical ... #microbiology