Clinical chemistry assay reagent kits

Match the method to the platform

An assay name alone does not establish compatibility. Give the analyser model and request the applicable manufacturer application or system-specific pack. For manual or semi-automated work, identify that requirement clearly. A method change should be visible to the laboratory rather than introduced through a broadly worded substitute.

Break profiles into constituents

Liver function, lipid and renal profiles are convenient groupings, but their contents can vary. List exactly which assays are needed and the quantity for each. Distinguish total and direct bilirubin or direct and calculated reporting requirements where relevant to the purchasing specification.

Understand the pack format

Liquid and lyophilised products, reagent volumes and multi-component kits create different replenishment needs. Ask what is included and whether a standard or calibrator is supplied separately. Compare usable quantities using the documented application rather than assuming the same bottle volume yields the same number of tests.

Keep special assay requirements clear

CRP and cardiac-marker requests particularly need precise method and platform descriptions. A routine CRP assay is not automatically a high-sensitivity one, and a troponin request must identify the required analyte and format. The responsible team should define these needs before proposals are compared.

Include quality and lot documents

Request the relevant control and calibration products, with applicable assigned values and instructions. Ask for storage, expiry and in-use stability for the exact proposed references. A low-volume assay may need a smaller pack even when a larger option appears cheaper per millilitre.

Common questions