Details

Autor(en) / Beteiligte

• Gaur, Kavita
• Sakhuja, Puja
• Majumdar, Kaushik
• Thakral, Divya Arora

Titel

Life After Death

Ist Teil von

• American journal of clinical pathology, 2021-02, Vol.155 (2), p.296-307

Ort / Verlag

England

Erscheinungsjahr

2021

Quelle

Oxford Journals 2020 Medicine

Beschreibungen/Notizen

• To test the performance characteristics of 69 primary immunohistochemistry antibodies after expiration and compare with fresh primary antibodies wherever possible. A total of 69 expired primary antibodies were evaluated for specificity, background staining, and intensity. An optimal staining result corresponded to a semiquantitatively scored 2+ or 3+ intensity, with intact specificity devoid of moderate or strong background staining. Any deviation from a normal staining pattern was also considered to be a suboptimal result. Nearly half of the antibodies studied showed an optimally positive staining result after expiration (34/69, 49.2%). Overall, 10.1% (7/69) of antibodies could be compared with fresh primary antibodies of the same clone with equivalent results. Eight of 69 (11.6%) expired antibodies showed splotchy or granular staining. Evidence from this study and previous work point to maintained functionality of a fair number of primary immunohistochemical antibodies after expiration. Decisions about the use of such reagents should be guided by a thorough assessment of functionality by the pathologist rather than a manufacturer-specified deadline. Quality maintenance should imply a sensible balance between histopathologic performance and economics.