An EXTENSION provides you with some additional time to have your vehicle tested (e.g. (d) Extension of Time Requirements Upon the Death of a Party.Maryland State agency regulations are compiled in the Code of Maryland Regulations (COMAR). The extension time of PCR depends upon the synthesis rate of DNA polymerase and the length of target DNA. Cardinal Health improves the cost-effectiveness of healthcare. Here are just a few ways we're helping veterinary professionals practice at their best.