Malaria laboratory findings: Difference between revisions
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==Laboratory Findings== | ==Laboratory Findings== | ||
Whenever possible, the diagnosis of malaria should always be confirmed by laboratory tests. These should include: | Whenever possible, the diagnosis of malaria should always be confirmed by laboratory tests. These should include: | ||
* Specific diagnostic tests for malaria | |||
* Laboratory workup | |||
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, , and and increases in lactic dehydrogenase may be marked with large P. falciparum parasite burdens. | |||
Microcytosis may be seen in patients from malaria-endemic areas but is often due to iron deficiency or thalassemia. | |||
Leukocyte counts may be high, normal, or low. | |||
Platelet counts may be normal or slightly low but have been observed to be <70,000/μL in P. falciparum infection398 and occasion- ally in P. vivax infection. | |||
Sodium may be slightly low, possibly owing to syndrome of inappropriate antidiuretic hormone, excessive vomiting, or urinary losses. | |||
Acidemia (pH less than 7.35), acidosis (bicarbonate < 15 mmol/L), and lactate levels >5 mmol/L can be seen in severe P. falciparum malaria (see later). | |||
Some degree of renal impairment is common in falciparum malaria and may be associated with increased creatinine, proteinuria, and hemoglobinuria. | |||
Serum glucose is often low in children with falciparum malaria, but it is commonly normal in adults. | |||
In children with severe falciparum malaria, bacteremia/sepsis may be present at the time of initial clinical evalua-tion and blood cultures may be positive.402,403 | |||
==Laboratory Findings== | ==Laboratory Findings== | ||
The table below displays the nonspecific laboratory abnormalities associated with Ebola infection, including:<ref name="pmid21084112">{{cite journal| author=Feldmann H, Geisbert TW| title=Ebola haemorrhagic fever. | journal=Lancet | year= 2011 | volume= 377 | issue= 9768 | pages= 849-62 | pmid=21084112 | doi=10.1016/S0140-6736(10)60667-8 | pmc=PMC3406178 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=21084112 }} </ref> | The table below displays the nonspecific laboratory abnormalities associated with Ebola infection, including:<ref name="pmid21084112">{{cite journal| author=Feldmann H, Geisbert TW| title=Ebola haemorrhagic fever. | journal=Lancet | year= 2011 | volume= 377 | issue= 9768 | pages= 849-62 | pmid=21084112 | doi=10.1016/S0140-6736(10)60667-8 | pmc=PMC3406178 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=21084112 }} </ref> | ||
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! style="width: 75px; background: #4479BA; text-align: center;"|{{fontcolor|#FFF|Test}} | ! style="width: 75px; background: #4479BA; text-align: center;"|{{fontcolor|#FFF|Test}} | ||
! style="width: 200px; background: #4479BA; text-align: center;"| {{fontcolor|#FFF|Findings}} | ! style="width: 200px; background: #4479BA; text-align: center;"| {{fontcolor|#FFF|Findings}} | ||
|- | |||
| style="background: #F5F5F5; padding: 5px; text-align: center;"| '''[[Complete Blood Count]] count''' | |||
| style="background: #DCDCDC; padding: 5px;"| Decreased [[Hemoglobin]]<br>Decreased [[Hematocrit]]<br>Decreased [[Haptoglobin]]<br>[[Microcytosis]] | |||
|- | |- | ||
| style="background: #F5F5F5; padding: 5px; text-align: center;"| '''[[White blood cell]] count''' | | style="background: #F5F5F5; padding: 5px; text-align: center;"| '''[[White blood cell]] count''' | ||
| style="background: #DCDCDC; padding: 5px;"| [[ | | style="background: #DCDCDC; padding: 5px;"| Increased or Decreased [[Leukocyte Count]] | ||
|- | |- | ||
| style="background: #F5F5F5; padding: 5px; text-align: center;"| '''[[ | | style="background: #F5F5F5; padding: 5px; text-align: center;"| '''[[Biochemistry]]''' | ||
| style="background: #DCDCDC; padding: 5px;"| [[ | | style="background: #DCDCDC; padding: 5px;"| [[Hypoglycemia]]<br>Increased [[LDH]]<br>Possible [[Hyponatremia]]<br> Acidosis: High [[Lactate]]; Low [[Bicarbonate]] | ||
|- | |- | ||
| style="background: #F5F5F5; padding: 5px; text-align: center;"| '''[[Coagulation]]''' | | style="background: #F5F5F5; padding: 5px; text-align: center;"| '''[[Coagulation]]''' | ||
| style="background: #DCDCDC; padding: 5px;"| | | style="background: #DCDCDC; padding: 5px;"| [[Thrombocytopenia]] | ||
|- | |- | ||
| style="background: #F5F5F5; padding: 5px; text-align: center;"| '''[[Liver function tests]]''' | | style="background: #F5F5F5; padding: 5px; text-align: center;"| '''[[Liver function tests]]''' | ||
| style="background: #DCDCDC; padding: 5px;"| Raised [[ | | style="background: #DCDCDC; padding: 5px;"| Raised [[]]<br>[[]]<br>[[]]<br>[[]] | ||
|- | |- | ||
| style="background: #F5F5F5; padding: 5px; text-align: center;"| '''[[Urinalysis]]''' | | style="background: #F5F5F5; padding: 5px; text-align: center;"| '''[[Urinalysis]]''' | ||
| style="background: #DCDCDC; padding: 5px;"| [[Proteinuria]] | | style="background: #DCDCDC; padding: 5px;"| [[Proteinuria]]<br>[[Hemoglobinuria]] | ||
|} | |} | ||
Revision as of 20:04, 24 July 2014
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Laboratory Findings
Whenever possible, the diagnosis of malaria should always be confirmed by laboratory tests. These should include:
- Specific diagnostic tests for malaria
- Laboratory workup