12 results
Urine Drug Screens - Common drugs that may cause false positive tests 

Amphetamines:
Bupropion, Labetalol, Methylphenidate, Phenylephrine,
drugs that may cause ... DrugScreens #UDS #Laboratory ... Toxicology #Diagnosis #FalsePositive ... #Testing
COVID19 Testing - PCR vs CT - Sensitivity and Specificity

Original Data via https://pubs.rsna.org/doi/full/10.1148/radiol.2020200642

Admission laboratory patterns in
COVID19 Testing ... - PCR vs CT - Sensitivity ... .2020200642 Admission laboratory ... #PCR #ChestCT #Sensitivity ... #Coronavirus #VisualAbstract
1,3 Beta-D-Glucan and Galactomannan - Pathogens, and Testing Characteristics
1,3 ß-D-glucan:
 • Most fungi excluding mucor and
Pathogens, and Testing ... Glucan-containing gauzes ... Galactomannan #Pathogens #Testing ... Characteristics #Sensitivity ... #Specificity #Laboratory
Hypereosinophilia Different Diagnosis and Workup
Secondary causes are broad so start with a med review, the most
Workup Secondary causes ... the most common cause ... the US inpatient setting ... - VA Joint Chiefs ... Diagnosis #Workup #algorithm
1,3-Beta-D-Glucan and Galactomannan Testing Sensitivity Specificity and False Positives
1,3-Beta-D-Glucan
 • Cell wall component of many fungi
Galactomannan Testing ... Sensitivity Specificity ... Galactomannan #Fungal #Testing ... #FalsePositives ... #Laboratory #sensitivity
Causes of Inaccurate Fecal Occult Blood Test Results 

False Positive gFOBT:
Ingestion of nonhuman heme (eg, meat
Causes of Inaccurate ... #OccultBlood #Testing ... #Laboratory #FalsePositive
Causes of Primary Amenorrhea - Differential Diagnosis Algorithm
No onset of menarche by age 16 with secondary
Differential Diagnosis Algorithm ... : • Androgen insensitivity ... Functional (e.g. eating ... Differential #Diagnosis #Algorithm ... #Causes #OBGyn
Diagnostic algorithm for differentiating vestibular neuritis from stroke in patients with AVS. This sequence of testing
Diagnostic algorithm ... the diagnostic algorithm ... hearing yielded 100% sensitivity ... disposition, even if the cause ... AVS #Posterior #CVA
Antibiotic Susceptibility Testing Methods
1) Kirby Bauer Disk Diffusion: disks impregnanted w/ Abx → circular gradient →
Susceptibility Testing ... MIC 4) Automated testing ... concentrations + algorithms ... #Antibiotic #Sensitivity ... #laboratory #microbiology
Posterior Reversible Encephalopathy Syndrome (PRES) Overview

Clinico-Radiological Syndrome, characterized by:
 • Headache
 • Seizures
 • Altered mental
sequences improve sensitivity ... narrowing on MRA/CTA ... thrombosis Testing ... the underlying cause ... with AEDs until cause