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Trypan blue vs MTT: which cell viability assay should I use?

Published Sep 18, 2026Updated Oct 8, 2026Last verified Sep 18, 2026Requests recorded in this site’s own server logs, with the crawler identity checked by reverse DNS or IP range.Google27Meta22OpenAI8Anthropic5Parallel4Ahrefs2Apple1Microsoft1Perplexity1First collected Sep 18, 2026Recent requestsMicrosoftNov 7, 2026AhrefsOct 30, 2026Meta · unverifiedOct 12, 2026Meta · unverifiedOct 12, 2026Meta · unverifiedOct 12, 2026Meta · unverifiedOct 12, 2026Meta · unverifiedOct 12, 2026AhrefsOct 9, 2026Meta · unverifiedOct 9, 2026OpenAIOct 6, 2026Meta · unverifiedOct 4, 2026Meta · unverifiedOct 3, 2026
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Quick answer

Trypan blue classifies individual cells by membrane integrity and gives a viable count and percentage. That suits cell suspensions and product release. MTT and other tetrazolium assays measure average metabolic activity per well over 1–4 hours. That suits plate-based proliferation or cytotoxicity screening [1]. Trypan blue can overestimate viability compared with AO/PI and struggles with debris [2]. Metabolic assays can be skewed by reducing or fluorescent compounds [1].

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Answer

ATP luminescence is the most sensitive plate format in the NCBI Assay Guidance Manual, detecting fewer than 10 cells per well [1].

Stem cells in cosmetic surgery

In cosmetic surgery, "stem cell" procedures almost always use adipose-derived stem cells. The stromal vascular fraction (SVF), which contains them, is separated from liposuctioned fat and mixed into the fat being grafted, as in stem cell breast augmentation and stem cell fat grafting.

Sources

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  2. journalChallenges of Cell Counting in Cell Therapy Products — Cell Transplantation (Liu M et al.) · accessed Nov 10, 2026 · Evidence page
  3. journalCAR T cell viability release testing and clinical outcomes: is there a lower limit? — Blood (Chong EA et al.), 134(21):1873–1875 · accessed Nov 10, 2026 · Evidence page
  4. journalQuality standards for NK cell immunotherapies — Frontiers in Bioengineering and Biotechnology (von Werz et al.) · accessed Nov 10, 2026 · Evidence page
  5. academicCell Viability – Flow Cytometry Facility — University of Toronto, Temerty Faculty of Medicine Flow Cytometry Facility · accessed Nov 10, 2026 · Evidence page
  6. journalPlasma membrane permeabilization following cell death: many ways to dye! — Cell Death Discovery (De Schutter E et al.) · accessed Nov 10, 2026 · Evidence page
  7. journalAssessing Adipocyte Viability and Surgeons' Work Efficiency by Comparing Different Liposuction Methods — Plastic and Reconstructive Surgery Global Open (Urbonas T et al.) · accessed Nov 10, 2026 · Evidence page
  8. journalQuantitative assessment of the impact of cryopreservation on human bone marrow-derived mesenchymal stem cells: up to 24 h post-thaw and beyond — Stem Cell Research & Therapy (Bahsoun S, Coopman K, Akam EC) · accessed Nov 10, 2026 · Evidence page
  9. governmentContent and Review of Chemistry, Manufacturing, and Control (CMC) Information for Human Somatic Cell Therapy Investigational New Drug Applications (INDs) — U.S. Food and Drug Administration · accessed Nov 12, 2026 · Evidence page