Hemoptysis laboratory findings
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Sadaf Sharfaei M.D.[2]
Overview
There are laboratory tests that are helpful for diagnosis the underlying cause of hemoptysis. Sputum must be evaluated for the cytology, gram stain, culture, and acid-fast stain. Arterial blood gases might show hypoxia. Complete blood count (CBC) might show elevated WBC, low platelet, and anemia. Signs of dehydration might be detected in laboratory tests such as BUN, Cr, urinalysis, or electrolytes. Coagulation studies might be abnormal.
Laboratory Findings
- There are laboratory tests that are helpful for diagnosis the underlying cause of hemoptysis.[1][2][3]
- Sputum analysis provides valuable information about the cause of hemoptysis. Sputum must be evaluated for the followings:
- Laboratory tests that might be abnormal in a patient with hemoptysis:
- Arterial blood gases might show:
- Blood urea nitrogen might be elevated (normal BUN 8 to 20 mg/dL)
- Creatinine might be elevated (normal Cr 0.5 to 1.0 mg/dL for women and 0.7 to 1.2 mg/dL for men)
- Complete blood count (CBC) might show:
- Coagulation studies might show:
- Elevated prothrombin time (normal PT 11-14 sec)
- Elevated partial thromboplastin time (normal aPTT 20-40 sec)
- Urinalysis might show:
- Electrolytes
References
- ↑ Lee, Myoung Kyu; Kim, Sang-Ha; Yong, Suk Joong; Shin, Kye Chul; Kim, Hyun Sik; Yu, Tae-Sun; Choi, Eun Hee; Lee, Won-Yeon (2015). "Moderate hemoptysis: recurrent hemoptysis and mortality according to bronchial artery embolization". The Clinical Respiratory Journal. 9 (1): 53–64. doi:10.1111/crj.12104. ISSN 1752-6981.
- ↑ Khalil, A.; Fedida, B.; Parrot, A.; Haddad, S.; Fartoukh, M.; Carette, M.-F. (2015). "Severe hemoptysis: From diagnosis to embolization". Diagnostic and Interventional Imaging. 96 (7–8): 775–788. doi:10.1016/j.diii.2015.06.007. ISSN 2211-5684.
- ↑ Bruzzi, John F.; Rémy-Jardin, Martine; Delhaye, Damien; Teisseire, Antoine; Khalil, Chadi; Rémy, Jacques (2006). "Multi–Detector Row CT of Hemoptysis". RadioGraphics. 26 (1): 3–22. doi:10.1148/rg.261045726. ISSN 0271-5333.