These are some of the things it could mean. Only you know the context.
BLP
Blood Pressure
BLP
-Basic Liver Protein + 1 variant
BLP
-Butyl Lauryl Phthalate
BLP
Bacterial Leaf Pustule
BLP
Bacterial lipoprotein + 2 variants
BLP
Bacterial lipopeptide + 1 variant
BLP
Bacteriocin-Like Peptide
BLP
Bacterium-Like Particle
BLP
Balloon Laryngoplasty
BLP
Band-Limited Power
BLP
Basal-Like Phenotype
BLP
Best Linear Prediction
BLP
Beta-lactamase-positive
BLP
beta-lipoprotein + 1 variant
BLP
Bombesin-Like Peptides