How do I become a direct-customer?
How do I view technical content on the Lin-Zhi International Inc. (LZI) website?
- If you have a LZI website account, please log in to your account to have access to view the pdfs on the website.
- If you do not have a LZI website account and wish to have one, please send your request to firstname.lastname@example.org with your full name and the name of your company.
How many tests can I run from LZI EIA kits?
This depends on which clinical analyzer and what parameters are being used. Generally, a small kit can provide approximately 500 to 900 tests and a large kit can provide approximately 5000 to 9000 tests.
- If you would like to know the number of tests for a specific analyzer, please contact customer service at email@example.com or call (408) 970-8811 (Ext 4147) for further assistance.
How many tests can an AU instrument get with a small kit?
For a large kit, the AU instruments can conduct 10 times more the number of tests.
How many tests could I get out of the sample kit?
How many bottles should I order for calibrator and controls?
What analyzers will LZI reagents run on?
Where can I get cross-reactivity information for a specific assay?
What is the shelf-life of your product?
Why is there left-over reagent in my R1 or R2 bottle?
What is the difference between Qualitative, Semi-Quantitative, and Quantitative testing?
- Qualitative Testing is used to test for the presence or absence of a targeted drug of interest. Qualitative results are reported as positive or negative based on a specified cut-off concentration. Many of the cutoffs LZI uses are based on SAMHSA guidelines. If the absorbance rate of the sample is higher than the cutoff concentration absorbance rate, the result will be positive; if the absorbance rate is lower than the cutoff concentration absorbance rate, the result is negative.
- Semi-Quantitative Testing gives an approximation of how much quantity of a particular drug is in a sample based on known concentrations from a five (or six) point calibration curve. Although clinical analyzers may give a single numerical value when reporting semi-quantitative results, these results indicate the extrapolated numerical value based on the results of the calibration curve. Values are considered semi-quantitative because the immunoassay, which is based on an antibody, may reflect a cross-reactivity of the antibody to other analytes aside from the target analyte.
- For example, an antibody may detect the analyte of interest as well as other structurally related compounds. The resulting absorbance values are then a combination of not just the single analyte of interest but all the compounds that were recognized by the antibody.
- Quantitative Testing provides a specific concentration of how much of a particular drug is in a sample. The only LZI assay that qualifies as a Quantitative test is the Ethyl Alcohol assay. This assay is an enzymatic assay (enzyme based) rather than an immunoassay (antibody based) and therefore does not have cross-reactivity issues that can be found with immunoassay testing and has therefore been 510(k) cleared as a quantitative assay.
What products do I need for Qualitative and Semi-Quantitative testing?
- For Qualitative testing we recommend: Reagent, Negative calibrator (0 ng/mL), Cutoff Calibrator, Negative control (aka Level 1 Control), and Positive control (aka Level 2 Control)
- For Semi-Quantitative testing we recommend: Reagent, Negative calibrator (0 ng/mL), Low Calibrator, Cutoff Calibrator, Intermediate Calibrator, Intermediate Calibrator #2 (NBUP EIA only), High Calibrator, Negative control (aka Level 1 Control), Positive control (aka Level 2 Control)
The specific concentrations and reference numbers can be found on the LZI Product Catalogs.
Can LZI setup the assay and assist with the moderate complexity validation on our analyzer?
What tests/assays can I use the Multi-Analyte calibrators and controls with?
- Multi-Analyte Set C: AMP 500, BARB 200, BZO 200, COC 150, MAMP, MTD, OPI 2000
How do I know which Multi-calibrator set to Use?
Could I request for an assay that is not currently listed in the catalog?
Where can I get a copy of a parameter sheet for a particular instrument?
Why do the parameter documents have (DRAFT) written on top?
Where is the individual SDS sheet for my specific assay?
Why was my order not processed?
- For purchase orders sent before 2:00PM (Pacific Standard Time, PST), a confirmation email will be sent out within 3 hours of order receival and processed to be shipped out the same day. For account status inquiries, please contact our Accounting Department at firstname.lastname@example.org for further assistance.
- Incorrect item number written on the purchase orders could delay order process as well. Please check with our current catalog to see if the correct catalog or item number was used. For a copy of the catalog, please email customer service at email@example.com or visit our website to see our current urine and oral fluid catalogs.
What is LZI’s return policy?
- Please contact customer service at firstname.lastname@example.org or call (408) 970-8811 (ext. 4147) for further assistance.
What is LZI’s Manufacturer’s Guarantee?
Are LZI Assays CLIA Categorized?
- For example, LZI BUP EIA is moderately categorized on the Beckman AU480 analyzer. At the top of the page it states the name of the assay, instrument, and has classification listed as moderate.