How do leukocytes (WBC) effect PRP?
Why Does Leukocyte Concentration Matter?
Clinical Evidence and Outcomes
Common PRP Ststems: WBC
(use tablet or computer to see table)
PRP system
Leukocyte Rich or Poor?
Juventix
Poor
Arthrex Angel
Adjustable
Emcyte
Adjustable
Regen
Poor
Cellenis
Rich
Harvest
Adjustable
Dr. PRP
Adjustable
Integrity
Adjustable
Progen
Adjustable
Apex Xcell
Adjustable
CARE stream
NP/NF
Selphyl
Poor
EZ gel
Rich
NP/NF = Not Published and Not Found
Recommendations
LP-PRP (like Juventix, Harvest, Selphyl):
Preferred for facial aesthetics, intra-articular, and soft tissue healing where minimizing inflammation is critical
LR-PRP (like Cellenis or other adjustable kits):
May be considered for chronic tendon injuries but carries a higher risk of post-injection pain and inflammation.
Adjustable Systems (EmCyte, Arthrex, Harvest, Dr. PRP, Integrity, Progen, Apex):
Allow clinicians to tailor leukocyte content to the specific clinical scenario.
Summary:
Leukocyte concentration is a major determinant of PRP’s inflammatory potential and clinical suitability. Juventix’s leukocyte-poor approach is supported by evidence for improved comfort and outcomes in aesthetics and joint applications, while some competitors offer customizable or leukocyte-rich options for specific indications. The choice should be matched to the clinical goal and patient needs 1,2,8.
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- Leukocyte-poor PRP (LP-PRP): Contains WBCs below whole blood levels 1,5.
- Inflammatory Response:Leukocytes release cytokines and enzymes that can drive inflammation. In some cases (e.g., tendon repair), this can be beneficial, but in others (e.g., intra-articular injections, aesthetics), excess inflammation may cause pain, swelling, and tissue irritation 2,8.
- Catabolic Effects:High WBC concentrations can increase the expression of catabolic (tissue-breaking) factors like interleukin-1 and TNF-alpha, which may contribute to cartilage breakdown and hinder healing in joints 8.
- Healing Outcomes:LP-PRP is often preferred for intra-articular and aesthetic applications due to lower risk of adverse reactions, while LR-PRP may be more effective for chronic tendinopathies and certain soft tissue injuries 1,2.
- Knee Osteoarthritis:LP-PRP results in improved functional outcomes compared to LR-PRP and hyaluronic acid, with fewer inflammatory side effects 2.
- Tendinopathies:Some studies suggest LR-PRP may provide better long-term pain relief in conditions like lateral epicondylitis, but with higher rates of post-injection discomfort 1.
- Adverse Reactions:Both LR-PRP and LP-PRP have similar safety profiles overall, but LR-PRP is associated with more transient local reactions (swelling, pain) 2.
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