Is the specification of CD19-PE antibody 100 tests available in stock? What is the price?

Whether imported CD19-PE 100 tests are in stock varies greatly among authorized agents. I suggest you send the existing item number, clone number, and fluorescence to two or three agents, and ask them to confirm the spot batch number, available shipping date, and warehouse location by email, instead of just listening to "should arrive". When quoting including tax, it is necessary to clarify whether it includes 13% value-added tax, cold chain transportation, freight, and payment terms. It is best to ask the other party to provide a formal quotation. Conventional CD19-PE is a common item and may be available in domestic warehouses, but customs clearance or batch inspection may take longer. If it is urgently needed, you can add 50 tests first, don't wait for 100 tests.

Before purchasing, confirm the storage conditions and shelf life of the antibody. After 100 tests arrive, aliquot into microcentrifuge tubes to avoid repeated freeze-thaw cycles, which would reduce sensitivity. Upon arrival, perform titration before running formal samples; do not proceed directly to immunophenotyping using the volume specified in the instructions. When comparing domestic and imported products, it is recommended to simultaneously stain CD19/CD20/CD10 or your existing panel to check whether compensation and double-positive population positions are consistent. If the domestic product shows slightly lower MFI in the positive population but stable clustering, it may still meet routine testing requirements; the key is batch-to-batch consistency and supply stability.

For domestic substitution of the same target, you can start with the clone number, fluorochrome-to-protein ratio, recommended usage, COA, and inter-batch CV. B-cell leukemia immunophenotyping has high requirements for CD19, so you cannot focus only on price. It is recommended to use the same PBMC or bone marrow sample for parallel staining, and compare the positive rate, MFI of the positive peak, negative background, and staining index. If it is intended for clinical diagnosis-related use, you must also confirm whether it has a registration certificate or is for research use only, to avoid compliance risks. For batch-to-batch stability, you can ask the manufacturer to provide COAs for three consecutive batches, or apply for small samples to perform inter-batch retesting.

It is recommended not to inquire about the actual transaction price online, as taxes, shipping costs, payment terms, and terminal/research nature can all affect the price. 100 tests generally have lower testing costs than 50 tests, but if the laboratory usage is not large, 50 tests packaged and frozen are more secure. When applying for domestic trial equipment, clearly inform the other party of your existing imported antibody item number, sample type, and instrument, and ask the technical team to recommend cloning and fluorescein. Trial installation usually requires 5-10 tests, which is sufficient for conducting a parallel comparison; Request the manufacturer to provide titration advice and diluent to avoid misjudgment due to improper use.