Alopecia laboratory findings: Difference between revisions
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{{CMG}} | {{CMG}} [[Ogechukwu Hannah Nnabude, MD]] | ||
==Overview== | |||
Some causes of alopecia may present with abnormal laboratory findings. For example, [[thyroid stimulating hormone]] levels may be elevated in hypothyroidism. In syphilis, patients may have an elevated [[rapid plasma reagin]] level. Hence, laboratory investigations may help narrow down the cause of alopecia. | |||
==Laboratory Findings== | ==Laboratory Findings== | ||
Revision as of 04:45, 30 December 2020
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Ogechukwu Hannah Nnabude, MD
Overview
Some causes of alopecia may present with abnormal laboratory findings. For example, thyroid stimulating hormone levels may be elevated in hypothyroidism. In syphilis, patients may have an elevated rapid plasma reagin level. Hence, laboratory investigations may help narrow down the cause of alopecia.
Laboratory Findings
Electrolyte and Biomarker Studies
The following laboratory tests can be completed in cases of a patient presenting with alopecia.
- Antinuclear antibodies (ANA)
- Dehydroepiandrosterone-sulfate (DHEA-S)
- Erythrocyte sedimentation rate (ESR)
- Iron studies
- Prolactin
- Rapid plasma reagin (RPR)
- Testosterone
- Thyroid function tests
- Viral and bacterial cultures
There are other tests available in cases in which there are other symptoms associated with alopecia.
- KOH prep if patchy alopecia with scaling or inflammation
- Medical illness suspected: CBC, TSH, possibly ferritin
- RPR if patchy or unexplained loss