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CBC with differential and platelet count
Looks for low platelets, anemia, or white-cell changes that can suggest dengue, malaria, bacterial infection, or other causes.
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Liver function tests and kidney function/electrolytes
Includes AST/ALT, bilirubin, creatinine, urea, sodium, potassium. These help assess dehydration and illnesses such as dengue, malaria, hepatitis, leptospirosis, or drug effects.
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Urine routine/microscopy and urine culture
Especially if there is burning urine, urgency, back pain, or no obvious source of fever.
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Blood cultures, preferably before further antibiotic doses
Usually 2 sets from different sites if bacterial bloodstream infection or typhoid is suspected. Because you have already taken azithromycin and cefixime, cultures may be falsely negative. Tell the doctor exactly which antibiotics, dose, and when the last dose was taken.
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Malaria test
Rapid antigen test and/or peripheral blood smear, particularly if you live in or travelled through a malaria area, had chills/sweats, or mosquito exposure. A negative first test does not always exclude malaria if suspicion remains.
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Dengue testing
Depending on the day of illness and local circulation, this can include NS1 antigen/PCR early in illness and IgM later. Platelet count and hematocrit may need repeat monitoring if dengue is suspected.
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COVID-19 and influenza testing
Particularly with sore throat, cough, runny nose, body aches, or exposure.
Fever with headache plus stiff neck or altered mental state can indicate meningitis and needs immediate assessment. The
CDC lists fever, headache, stiff neck, vomiting, light sensitivity, and altered mental status as key meningitis symptoms.
Until you are seen: drink fluids or oral rehydration, record temperature and symptoms, and avoid ibuprofen/aspirin unless a clinician says it is safe, especially until dengue is excluded. Continue or stop the antibiotics only after speaking to the prescribing doctor today.