TruQuick™ MYO
TruQuick MYO is a rapid chromatographic immunoassay for the qualitative detection of human Myoglobin in whole blood, serum or plasma as an aid in the diagnosis of myocardial infarction (MI).
Myoglobin (MYO) is a heme-protein normally found in skeletal and cardiac muscle with a molecular weight of 17.8 kDa. It constitutes about two percent of total muscle protein and is responsible with transporting oxygen within the muscle cells.1 When the muscle cells are damaged, Myoglobin is released to the blood rapidly due to its relatively small size. Following the death of tissue associated with MI, Myoglobin is one of the first markers to rise above normal levels. The level of Myoglobin increases measurably above baseline within two to four hours post-infarct, peaking at nine to 12 hours and returning to baseline within 24-36 hours.2, 3 A number of reports suggest the measurement of Myoglobin as a diagnostic aid in confirming the absence of myocardial infarction with negative predictive values of up to 100% reported at certain time periods after onset of symptoms.4 TruQuick MYO is a simple test that utilizes a combination of anti-Myoglobin antibody-coated particles and capture reagents to qualitatively detect Myoglobin in whole blood, serum or plasma. The minimum detection level is 50 ng/mL.
- Bring the pouch to room temperature before opening it. Remove the Test Cassette from the sealed pouch and use it within one hour.
- Place the cassette on a clean and level surface.
- For Serum or Plasma specimen:
- Hold the dropper vertically and transfer 2 drops of serum or plasma (approximately 50 μL) to the specimen area, then add 1 drops of Buffer (approximately 40 μL), and start the timer. See illustration below.
- For Venipuncture Whole Blood specimen:
- Hold the dropper vertically and transfer 3 drops of whole blood (approximately 75 μL) to the specimen area, then add 1 drops of Buffer (approximately 40 μL), and start the timer. See illustration below.
- For Fingerstick Whole Blood specimen:
- To use a capillary tube: Fill the capillary tube and transfer approximately 75 μL of fingerstick whole blood specimen to the specimen area of Test Cassette, then add 1 drop of Buffer (approximately 40 μL) and start the timer. See illustration below.
- To use hanging drops: Allow 3 hanging drops of fingerstick whole blood specimen (approximately 75 μL) to fall into the specimen area of Test Cassette, then add 1 drop of Buffer (approximately 40 μL) and start the timer. See illustration below.
- For Serum or Plasma specimen:
- Wait for the colored line(s) to appear. Read results at 10 minutes. Do not interpret the result after 20 minutes.
- Wong SS. Strategic utilization of cardiac markers for diagnosis of acute myocardial infarction. Ann Clin Lab Sci. 1996;26:301-12.
- Kagen LJ. Myoglobin methods and diagnostic uses. CRC Crit. Rev. Clin. Lab. Sci. 1978;2:273.
- Chapelle JP, et al. Serum myoglobin determinations in the assessment of acute myocardial infarction. Eur. Heart J.1982;3:122.
- Hamfelt A, et al. Use of biochemical tests for myocardial infarction in the county of Vasternorrland, a clinical chemistry routine for the diagnosis of myocardial infarction. Scand J Clin Lab Invest Suppl. 1990;200:20.