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

Amphetamines:
Bupropion, Labetalol, Methylphenidate, Phenylephrine,
drugs that may cause ... Toxicology #Diagnosis #FalsePositive ... #Testing
Causes of Inaccurate Fecal Occult Blood Test Results 

False Positive gFOBT:
Ingestion of nonhuman heme (eg, meat
Causes of Inaccurate ... #OccultBlood #Testing ... #Laboratory #FalsePositive
A retrospective cohort study of blood culture results and microbiology laboratory charges for pediatric cases of
for pediatric cases ... InfectiousDisease #FalsePositive ... BloodCultures #CoNS
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
CNS Infection in HIV / AIDS - Differential Diagnosis Framework

Principles of HIV-Associated CNS Opportunistic Infections:
 •
present in 15% of cases ... Demyelinating disease caused ... • JC-virus PCR sensitivity ... of serum CrAg testing ... comparable to CSF testing
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
Invasive Aspergillus (IA) - Diagnosis and Management
Aspergillus is ubiquitous in nature. Most invasive infections are caused
infections are caused ... Rhinosinusitis, CNS ... Diagnosis and Testing ... Galactomannan sensitivity ... associated with low sensitivity
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 ... CNS, Central nervous