Great. Thanks, Mike. As you can see from the highlights, we are off to a very strong start as we continue to drive robust financial performance maintain our leadership position in cell-free DNA analysis and achieve important milestones across the business. We process roughly 626,000 tests in the quarter, up 28% from Q1 of last year and 12% sequentially versus Q4. We generated $242 million in revenues in the quarter, which was a major increase, both versus Q4 and year-on-year. We also saw strong volume growth. We performed 71,000 Signatera and Altera test in the quarter, which is more than 100% growth versus Q1 of last year. We saw a very strong step-up in clinical volumes over Q4 of last year and is generating continued momentum this spring. As a result, we are pleased to be raising our annual revenue guide that we just set two months ago. We are moving to a new range of $995 million to $1.015 billion for the year. The rest of the elements of the guide will remain the same for now. We are on pace to hit our margin target of 41% to 44% and hit our reduced cash burn target of $300 million to $325 million. You will see our quarterly cash burn in Q1 cut almost in half versus Q1 2022, and we feel we're on track for our 2024 cash flow breakeven goal that we previously announced. In addition, we've been conservative with the impact of guidelines for 22q and expanded carrier screening and MRD testing in our ASP forecast. Note that these guidelines are not necessary to achieve our financial goals. We continue to extend our leadership position in women's health with two significant NIPT publications in a third paper that has been accepted for publication. We now have more than 40 published peer-reviewed papers highlighting the performance of our Panorama NIPT including the landmark SMART study. We think this clinical differentiation continues to be an important volume driver as the NIPT market continues to grow. Of course, we've had a string of wins for Signatera this spring as well. We continued our data leadership with several presentations at AACR, and we are very excited to announce two oral and 12 poster presentations that are out of this June. In addition, a new study demonstrated Signatera's performance in Stages three and four melanoma and the expanded I-SPY 2 study demonstrated the value of Signatera for breast cancer patients in the neoadjuvant setting. We think the neoadjuvant breast setting is important, and we will dig into that later in the call. After securing Medicare coverage for breast cancer in March, we were pleased to receive the major commercial coverage decision for Signatera with a pan tumor coverage policy from Blue Shield of California. In Oregon Health, we secured Medicare reimbursement for Prospera in heart transplantation. We haven't included this in the guidance originally. So this is a nice win. In kidney, in line with our expectations, we are seeing some modest disruption of the updated Medicare policy. But as you can see from the results in the guide, this isn't making an impact in the context of our overall business. especially with the upside from heart reimbursement now coming in. I'll get into more details a bit later in the call. Okay, great. Let me get into some of the business trends. We've more than tripled the quarterly volume since the beginning of 2019 and our growth rates remain in the mid-20s despite the significant increase in the scale of a business. I think that gives a sense of the commercial execution track record and shows that we are offering critical services is in very large patient populations. You can also see that Q1 historically represents a big step up over the prior year and 2023 has proven to be no different. This is driven in part by the seasonal patterns of NIPT favor in Q1, but also shows our ongoing success in taking market share and represents a continuation of the broader shift from maternal serum screening to NIPT. As a reminder, we think NIPT is only about 50% penetrated today. This year, our Q1 volume growth was further amplified by three strategies we have been pursuing that increased volume for the long term but we expect it would impact gross margins this year. One was our decision to continue operating in California and to participate in the prenatal screening program and into effect last fall when most lab providers opted to not participate. California initially required patients to go through the state program. Despite the low margin of the state's limited NIPT offering, we thought it was important to provide access for this patient population. However, after a legal challenge, the courts have now allowed NIPT to be offered outside of the state program, enabling us to regain some of the lost margin while increasing our volumes. So we're optimistic that we made the right decision to stay. The second was our decision to serve many new carrier screening customers after competitors exited the space last fall. Many of these customers are high-volume accounts and they have a preference for the broader carrier screening panels that currently have a very low margin profile. We opted to take on many of these accounts because we feel the clinical utility and guideline support for broad screening is strong, and we hope to see reimbursement rates improve as we go into 2024. The third is our decision to continue driving Signatera volumes because of the growth ramp and the upfront expense, Signature's margin profile is lower than our overall company margin. However, we expect that delta to narrow as we continue to lower COGS and increase ASP through various initiatives. Obviously, growing Signatera is the right decision as we are still in the very early days in oncology. We have established a strong competitive advantage for Signatera, particularly with the extensive body of peer review data we generated, which is now leading to strong uptake and more coverage. With each of these strategies, there was a trade-off between short-term gross margins and the future upside potential. Despite these volume bets, we've significantly improved our cash burn trajectory by continuing to grow top line revenue on top of now much lower operating expenses. You see this happening with our net cash burn reduction in Q1. Our aggressive cash burn goal is remaining intact and our strong gross margin guidance of 41% to 44% for the year. And again, we've been conservative with the potential upside for future society guidelines, which could boost things further. The next slide demonstrates the strong volume trends are translating into revenue at roughly the same pace. And as we just mentioned, we think there is upside on 22q broad panel carrier screening and Signatera clinical volumes. As we described in detail in March, we were very pleased to see strong updates to the ACMG guidelines on 22q. On ACOG guidelines, we think the data published in SMART are compelling. We're hopeful for a positive update soon, but of course, we don't have direct insight into the guideline process. With carrier screening off the back of favorable existing ACMG ACOG guidelines, we're seeing payers start to change their policies, which we think is a good sign. In oncology, we are very pleased to see sequential progress in our Signatera clinical ASPs moving from the mid-700s in Q4 to the low 800s in Q1. This trend was driven largely by incremental progress in our Medicare and recurrence monitoring mix with a smaller benefit coming from breast coverage. So for Signatera, we are ahead of schedule on our reimbursement trajectory, and we remain optimistic that we can see continued improvement over the course of '23. For clarity, we're not dependent on NCCN guidelines to give the ASP to a much stronger place Also, the signatory gross margin benefit from improvements in ASP was offset by the fact that we haven't yet gotten the full COGS benefit on the tissue exome, which is a benefit we expect to realize this year progresses. The next slide gets into the compelling new publications on our Panorama NIPT. As a reminder, Panorama represents around 50% of the NIPT market in the United States with differentiated capabilities, they're supported by more than 40 peer-reviewed publications. This includes SMART, the largest prospective multicenter NIPT study, where we clinically validated Panorama's performance in over 18,000 pregnancies with genetic outcomes confirmed for all samples analyzed in the study. With recent publications, we are continuing to add to the body of evidence. The first published in obstetrics and gynecology evaluated patients who receive a rare Panorama result that could indicate suspected material malignancy. We show that when Panorama sees a very specific type of DNA pattern, more than two third of the time, these patients have maternal cancer. The PPV of 67% is quite high, so doctors seeing this result are advised to investigate further. It's an extremely rare finding but one that could provide important and potentially life-saving clinical information for these patients and their doctors. The second is a new publication from SMART published in [indiscernible]. This publication found that in a subcategory of about 1 in 200 patients, Panorama was able to determine a significantly increased risk of adverse pregnancy outcomes. These patients were 4x more likely to have preeclampsia and 4x to 10x more likely to have preterm birth. In these patients, panorama may provide important information about increased risk for adverse outcome which could ultimately help doctors to more closely manage these pregnancies at high risk. Finally, we learned that another publication was accepted from SMART by genetics in medicine. This is the largest prospective clinical validation of screening for sex chromosome and employees with NIPT across over 17,000 pregnancies in a real-world setting, Panorama's performance when screening for sex chromosome aneuploidies was excellent. As we are seeing, the SMART study continues to yield critical new insights about NIPT and the real-world performance of Panorama. As the market expands, we think our strong data leadership continue to differentiate Panorama from other NIPTs. Okay. Let me transition over to Oregon Health. As I mentioned, we were pleased to secure Medicare reimbursement for Prospera in heart transplant. We hadn't originally included this in our guidance because we can't always predict when coverage will come in. Many of you will recall that we launched Prospera in heart ahead of reimbursement. So now that we're covered, we're already off to a running start with a nice volume ramp. We also have additional data count from the NIH-sponsored prospective DTRT study, which we think will be published later this year. So we're feeling really good about our trajectory in parts. Also in heart, but extending to kidney as well, we were pleased to see medical society endorsements of donor-derived cell-free DNA testing from the ASTS and AST in addition to recent endorsements from ISHLT and ESOT. These guidelines and statements could serve as the basis for further volume growth where today, the markets are very underpenetrated. On kidney, we've seen modest disruption in the transplant volumes as physicians worked out how to implement new Medicare policy. Some of the disruption is based on confusion surrounding the policy, which we think will resolve itself over time and some represents a slight shift in ordering patterns. The magnitude of the addition is in line with our expectations and it's offset somewhat by the upside from our heart coverage. As you can see from our raised revenue guidance, this isn't making a material impact on our overall trajectory. Looking ahead, the recent society endorsements provide a potential path to expand access and increase penetration. Plus, we've got new data from the now fully enrolled proactive trial that we think could help further expand patient access. The first readout will be at ATC in June. We think it's impressive data that can benefit the entire industry in support of donor-derived cell-free DNA testing, so we look forward to sharing it with the community. Now let me turn it over to John Fesko, Chief Business Officer, to give a few additional updates on chronic kidney disease in oncology. John?