24 results
Medications that Can Cause False Positives on Drug Tests

Urine drug screens (UDSs) are simple to use,
Medications that Can Cause ... False Positives ... medications can cause ... Protonix), may cause ... Benadryl) • Poppy seeds
Summary of Agents Potentially Contributing to False Positives on Urine Drug Screens (UDS)
Marijuana Metabolites
 • dronabinol,
Contributing to False ... ofloxacin, poppy seeds ... (High Rate of False ... not result in false ... DrugScreening #UDS #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 ... Glucan-containing gauzes ... other fungi • False ... Galactomannan #Pathogens #Testing
Urine Drug Screens - Common drugs that may cause false positive tests 

Amphetamines:
Bupropion, Labetalol, Methylphenidate, Phenylephrine,
drugs that may cause ... false positive ... FalsePositive #Testing
Blood Product Transfusions One Pager Summary
Type and screen - determines blood type and detects in recipient
Crossmatch - involves testing ... antigens (often false ... Causes purpura & ... TRALI): Leading cause ... negatives on testing
Blood Transfusion Reactions

Immune Mediated:
 • Febrile Non-Hemolytic Transfusion Reaction (FNHTR): Most common immune reaction to transfusion.
antigens (often false ... Causes purpura & ... TRALI): Leading cause ... negatives on testing ... more likely to cause
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Proves cause-effect ... probability of getting ... null when it’s false ... when it is indeed false ... but not on the causal
Causes of Gallbladder Wall Thickening - Differential Diagnosis
 • Physiologic: Contracted gall bladder in a non-fasting
Causes of Gallbladder ... bladder in a non-fasting ... Diagnosis #radiology #POCUS
Causes of Inaccurate Fecal Occult Blood Test Results 

False Positive gFOBT:
Ingestion of nonhuman heme (eg, meat
Causes of Inaccurate ... Test Results False ... anticoagulant medication False ... #OccultBlood #Testing
D-dimer
Plasma D-dimer is a product of clot breakdown, released upon degradation of polymerized, crosslinked fibrin. Elevated
age, which can cause ... specificity (i.e. more false ... adjusted d-dimer testing