"That's not unusual," Wayne said. "With improved response times to nine-one-one calls, we often get our heart attack victims into the ER within the three- to four-hour interval it takes for the biomarkers to rise. That's one of the reasons we routinely repeat the test at six hours. Jack nodded as he tried to sort out the discrepancy this new information provided. He didn't know whether he'd forgotten or never knew there was such a delay before bio-markers become positive. Not wishing to appear overly uninformed, he worded his next questions carefully. "Does it surprise you that an earlier bedside biomarker assay was positive?"
"Not really," Wayne said.
"Why not?"
"There are a lot of variables. First off, there's about a four percent false negative result as well as a three percent false positive. The tests are based on highly specific monoclonal antibodies, but they are not infallible. Secondly, the bedside kits are based on troponin I, not T, and there's a lot of bedside kits on the market. Was the bedside assay for troponin I alone or with myoglobin?"
"I don't know," Jack admitted. He tried to remember what was written on the box in Craig's doctor's bag, but he couldn't visualize it.
"That would be important. The myoglobin component becomes positive faster, often within as little as two hours. What's the time frame on this case?" He picked up the ER note and read aloud: "Patient's husband states chest pain and other symptoms developed between five and six p.m., probably closer to six." Wayne looked up at Jack. "She arrived in the ER close to eight, so the time frame is about right as far as our results are concerned, since it was less than four hours. Do you know when the bedside assay was done?"
"I don't," Jack said. "But if I had to guess, it would be somewhere around seven thirty."
"Well, that does seem marginal, but as I said, the bedside tests are made by a host of companies with widely differing sensitivities. The kits also should be carefully stored, and I believe there's an expiration date. Frankly, that's why we don't use them. We much prefer the troponin T, since it's made by only one company. We get very reproducible results with a short turnaround time. Would you like to see our Abbott analyzer? It's a beauty. It measures absorbance spectrophotometrically at four hundred fifty nanometers. It's right across the lab if you want to take a gander."
"Thank you, but I think I'll pass," Jack said. He was getting in technically way over his head, and his visit at the hospital had already been twice as long as he had planned. He certainly didn't want to keep Latasha waiting. He thanked Wayne for his help and returned quickly to the elevator. As he rode down to the first floor, he couldn't help but wonder if Craig's bedside biomarker assay kit had somehow been defective, either from improper storage or from being out of date, and had given a false positive. What if Patience Stanhope did not have a myocardial infarction? All at once, yet another dimension was opening up, particularly with the services of a toxicologist available. There were a lot more drugs that deleteriously affected the heart than those capable of simulating a heart attack.
Jack jumped into the car and quickly dialed Latasha's number. As he'd done with his call to Alexis, he put his phone on speaker and placed it on the passenger seat. By the time he was driving out of the hospital parking lot, Latasha answered.
"Where are you?" she asked. "I'm here in my office. I got two hot pizzas and two large Cokes. Where are you at?"
"I'm just leaving the hospital. I'm sorry it has taken as long as it has, but I learned something possibly important. Patience Stanhope's biomarker test was negative when it was read by the hospital analyzer."
"But you told me it was positive."
"That was from a bedside biomarker kit," Jack said. He carefully explained what he'd learned from the lab supervisor.
"What it all comes down to," Latasha said when Jack was finished, "is that now we're not sure she had a heart attack, which would be consistent with what we found during the post."
"Precisely, and if that is the case, the toxicology is going to be key."
"I already dropped the samples off at the toxicology lab with a note for Allan to give me a call."
"Perfect," Jack said. He couldn't help but marvel at how lucky he was to have Latasha helping him. If it hadn't been for her, he might have given up after finding nothing in the heart.
"I guess this puts the mourning husband in the crosshairs," Latasha added.
"There are still some inconsistencies," Jack said, remembering Alexis's points against Jordan 's being the bad guy "but generally I agree, as trite and venal as it sounds."
"When will you be here?"
"As soon as I can. I'm coming up to Route Nine. You're probably a better judge than I. Why don't you start on the pizza while it's hot."
"I'll wait," Latasha said. "I've got myself busy making us some frozen sections of the heart."
"I'm not sure I'll be eating much," Jack said. "I've gotten myself psyched. I feel like I've had ten cups of coffee."
When Jack flipped his phone shut, he checked the time. It was almost ten thirty, which meant Latasha's friend would soon be arriving at the toxicology lab. Jack hoped he'd have a lot of free time, since Jack could imagine keeping him busy most of the night. Jack had no illusions about the power of toxicology to detect poisons. It was not as easy a process as it was often portrayed in the popular media. For large concentrations of the usual drugs there usually was no problem, but for trace amounts of more toxic and lethal compounds that could kill a person in very small dosages, it was like finding the proverbial needle in a haystack.
Jack stopped at a traffic light and impatiently drummed his fingers on the steering wheel. The warm, soft, humid June air wafted in through the missing window. He was glad he'd taken the time to visit the hospital, although he now felt embarrassed about the idea of a hospital cover-up. Nonetheless he rationalized that the idea had indirectly led to his questioning whether Patience Stanhope had suffered a heart attack.
The light turned green, and he moved on. The problem was she still might have had a heart attack. Wayne had admitted that even with his vaunted absorbance analyzer, the rate of false negatives was higher than false positives. Jack sighed. There was nothing about this case that was simple and straightforward. Patience Stanhope was proving to be a problem patient even in death, which reminded him of his favorite lawyer joke: What's the difference between a lawyer and a prostitute? The prostitute stops screwing you when you die. From Jack's perspective, Patience was assuming some annoying lawyer-like qualities.
As Jack drove, he mulled over his promise to check in on Craig, who was probably at that time already in a deep, drug-and-alcohol-induced slumber. Jack wasn't excited about the idea and thought it unnecessary since, in his estimation, Craig was not suicidal in the slightest, and, as an intelligent physician, Craig was well aware of the power of the medications he was taking. On the other hand, the good side of making such a visit would be a chance for Jack to check what kind of biomarker kit Craig used and whether it was outdated. Until he had that information, he couldn't intelligently decide whether or not there was a higher than usual chance the result had been a false positive.
21
For almost five minutes Jack had watched the hands of the institutional wall clock as they implacably jumped staccato-fashion toward one thirty a.m. With the final leap of the minute hand, Jack took a breath. He hadn't realized he'd not been breathing for the final seconds, since the time was a mini-milestone. Exactly twelve hours hence he would be married, and all the years he'd avoided the issue would be history. It seemed inconceivable. Except for the relatively recent past, he'd practically institutionalized being by himself. Was he capable of marriage and thinking of two people instead of one? He didn't really know.