57 results
Algorithm for the diagnosis of chronic diarrhea.
It is usually impractical to test and treat the many
impractical to test ... many possible causes ... In most cases, it ... First, physicians should ... pick specific tests
Urine Drug Screens - Common drugs that may cause false positive tests 

Amphetamines:
Bupropion, Labetalol, Methylphenidate, Phenylephrine,
drugs that may cause ... false positive tests ... DrugScreens #UDS #Laboratory ... #Toxicology #Diagnosis ... FalsePositive #Testing
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
- Differential Diagnosis ... smear, HIV/HCV testing ... K), H. pylori test ... thyroid function test ... #hematology
Commonly Used Diagnostic Tests for Celiac Disease

Tissue transglutaminase (tTG) IgA antibodies
 - Most reliable noninvasive test
Commonly Used Diagnostic ... Celiac #Disease #Testing ... #Laboratory #Tests ... #Diagnosis #Workup ... #Table
Disseminated Gonococcal Infection - Diagnosis and Management Summary

Bacteremic spread of the Gram-negative diplococci Neisseria gonorrhoeae. History
Laboratory Diagnosis ... blood cultures should ... the preferred test ... testing of skin ... the workup • Test
COVID-19 Diagnostics In Context
Nucleic acid tests (NATs, for viral RNA)
1. Real time RT-PCR
2. Isothermal amplifcation
3. CRISPR
4.
COVID-19 Diagnostics ... Real time RT-PCR ... Serological rapid diagnostic ... #testing #laboratory ... #tests #pcr
Antinuclear Antibody Testing - Nuclear and Cytoplasmic Patterns
Nuclear Patterns:
 • Homogeneous pattern: 
   -
Antinuclear Antibody Testing ... Scl70 (in some cases ... Antinuclear #Antibody #Testing ... #differential #diagnosis ... #rheumatology
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
should be obtained ... more time for the laboratory ... (to support a diagnosis ... #workup #diagnosis ... #testing #Rheumatology
Abdominal Pain - Differential Diagnosis According to Localization of Abdominal Pain 

Abdominal pain can originate from
GI, infectious, hematologic ... extra-abdominal causes ... abdominal pain (Table ... exhaustive and should ... GrepMed Recommended Text
Causes of Secondary Hypertension - Differential Diagnosis and Screening Testing
Common causes: 
 • Renal parenchymal disease
- Differential Diagnosis ... and Screening Testing ... Renal ultrasound, Tests ... #Differential #Diagnosis ... #Workup #table