100 results
Algorithm for the diagnosis of chronic diarrhea.
It is usually impractical to test and treat the many
impractical to test ... diarrhea before testing ... reduce unnecessary testing ... pick specific tests ... the much smaller differential
The following graph was prepared based on the latest information on Testing for the Diagnosis of
information on Testing ... There are NO tests ... giving a false positive ... likely a false positive ... InfectiousDiseases #HIVAIDS #Testing
Tuberculosis Testing

LATENT TB
• LTBI is diagnosed when an asymptomatic patient has a positive TST or IGRA
Tuberculosis Testing ... patient has a positive ... Tuberculin skin testing ... microscopy • Testing ... • The positive
Antenatal Visits - Testing and Schedule
At Every Visit:	
 • Gestational Age	
 • BP
 • Maternal Weight
Antenatal Visits - Testing ... Glucose Tolerance Testing ... Glucose Challenge Test ... Glucose Tolerance Test ... 30 weeks) • Position
Medications that Can Cause False Positives on Drug Tests

Urine drug screens (UDSs) are simple to use,
Can Cause False Positives ... on Drug Tests ... yielding false-positive ... on drug tests? ... #drug #tests #differential
Gastrointestinal Evaluation of Iron Deficiency Anemia
In patients with anemia, diagnose iron deficiency if:
 • Ferritin <
Additional laboratory tests ... chronic kidney tests ... Test for celiac ... if serology is positive ... Non-invasive testing
Diagnostic Algorithm for Dizziness and Vertigo
Peripheral Vertigo:
 • Attacks: Sudden, severe, can last anywhere from seconds
Positive Hallpike ... test (posterior ... or supine roll test ... test Méniére's ... Vertigo #Algorithm #differential
The head impulse test (HIT) result is positive (abnormal) in nearly all patients with a peripheral
The head impulse test ... HIT) result is positive ... a stand-alone test ... #HeadImpulse #Testing
Summary of Agents Potentially Contributing to False Positives on Urine Drug Screens (UDS)
Marijuana Metabolites
 • dronabinol,
Contributing to False Positives ... Rate of False Positives ... naproxen and modern tests ... result in false positives ... DrugScreening #UDS #Testing
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
; if positive, test ... - Positive in ... - CCP antibody testing ... and C serology testing ... workup #diagnosis #testing