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Mastitis laboratory findings

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Prince Tano Djan, BSc, MBChB [2]

Overview

Overview

Diagnosis of mastitis is mainly clinical however, some patients with mastitis may have a positive bacterial culture of breast milk[1] although culture is rarely used to confirm bacterial infection of the milk because positive cultures can result from normal bacterial colonization, and negative cultures do not rule out mastitis.[2] Complete blood count may show an elevated neutrophil count although this is not specific to mastitis.

Laboratory Findings

Laboratory Findings

Common laboratory investigations used include:

  • Some patients with mastitis have a positive bacterial culture of breast milk.[1] Culture is rarely used to confirm bacterial infection of the milk because positive cultures can result from normal bacterial colonization, and negative cultures do not rule out mastitis. Culture has been recommended when the infection is severe, unusual, or hospital acquired, or if it fails to respond to two days’ treatment with appropriate antibiotics.[2]
References

References

  1. 1.0 1.1 Eglash A, Plane MB, Mundt M (2006). “History, physical and laboratory findings, and clinical outcomes of lactating women treated with antibiotics for chronic breast and/or nipple pain”. J Hum Lact. 22 (4): 429–33. doi:10.1177/0890334406293431. PMID 17062789.
  2. 2.0 2.1 Department of Child and Adolescent Health and Development. Mastitis: causes and management. Geneva, Switzerland: World Health Organization; 2000. http://whqlibdoc.who.int/hq/2000/WHO_FCH_CAH_00.13.pdf.

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