A 53-year-old man with a noncontributory medical history presented to the hospital with blurry vision, intermittently blue fingers, and slowly progressive dyspnea. Blood test results showed the following: hematocrit, 16% (reference interval, 40%–51%); white blood cells, 15.5 × 103/μL (reference interval, 4.2 × 103/μL to 9.1 × 103/μL); platelet count, 50 × 103/μL (reference interval, 150 × 103/μL to 330 × 103/μL). The phlebotomists had a difficult time drawing the patient's blood because it would immediately solidify in the tubes (Figure 1).
- What conditions could have caused blood to solidify in the tubes?
- What test can help determine the patient's medical condition?
- What steps could be taken to measure chemistry values in this sample?
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