197 results
Tuberculosis Testing

LATENT TB
• LTBI is diagnosed when an asymptomatic patient has a positive TST or IGRA
Tuberculosis Testing ... (TST) False-negative ... microscopy • Testing ... recommended because false-negative ... #Diagnosis #Workup
Hematuria Workup and Diagnosis Algorithm
 • Confirm hematuria → Urinalysis >3 RBCs/HPF, exclude mimics, repeat testing
Hematuria Workup ... mimics, repeat testing ... → Refer to Nephrology ... cystoscopy • Refer to Nephrology ... Diagnosis #Algorithm #Workup
Laboratory Testing in Hemolytic Anemia

Intravascular vs Extravascular Hemolysis
Reticulocytes
Unconjugated bilirubin
LDH
Peripheral smear
Haptoglobin
Urine hemosiderin
Urine hemoglobin
Carboxyhemoglobin

#Hemolytic #Anemia #Laboratory #Testing #workup
Laboratory Testing ... Anemia #Laboratory #Testing ... #workup #diagnosis
What is Fecal Occult Blood Testing (FOBT)
 • Screening for colorectal cancer in average risk population
Fecal Occult Blood Testing ... evaluation • False ... cauliflower, ETOH • False ... to unnecessary testing ... #OccultBlood #Testing
1,3 Beta-D-Glucan and Galactomannan - Pathogens, and Testing Characteristics
1,3 ß-D-glucan:
 • Most fungi excluding mucor and
Pathogens, and Testing ... and pneumocystis False ... other fungi • False ... Galactomannan #Pathogens #Testing
Ancillary Studies in the Workup of Syncope

#Syncope #Ancillary #Workup #Testing #Diagnosis
Studies in the Workup ... Syncope #Ancillary #Workup ... #Testing #Diagnosis
Differential Diagnosis of Acute Kidney Injury 

#Diagnosis #Nephrology #AKI #Acute #KidneyInjury #Causes #Differential #Workup #Algorithm #Ddxof
#Diagnosis #Nephrology ... #Differential #Workup
Chronic Diarrhea - Workup
Osmotic:
 • Consider food diary and trial avoiding certain foods or meds, Consider
Chronic Diarrhea - Workup ... A/P, Consider testing ... celiac and/or testing ... TSH, Consider testing ... Chronic #Diarrhea #Workup
Summary of Agents Potentially Contributing to False Positives on Urine Drug Screens (UDS)
Marijuana Metabolites
 • dronabinol,
Contributing to False ... (High Rate of False ... NSAlDs resulting in false-positive ... not result in false ... DrugScreening #UDS #Testing
Monoclonal Gammopathy Testing
Strengths, Weaknesses and Accuracy Compared
 - SPEP 
 - IFE 
 - FLC
Monoclonal Gammopathy Testing ... Monoclonal #Gammopathy #Testing ... SPEP #IFE #FLC #Nephrology