What is COVID-19 Neutralizing Antibody Test & Why do You Need to Get Tested?

COVID-19 Neutralizing Antibody Testing

“Quantitative detections of COVID-19 Neutralizing Antibodies in human serum,

plasma or whole blood”

 

What is the difference between COVID-19 Neutralizing Antibody and other COVID-19 antibodies? 1, 2

Unlike other COVID-19 antibodies, COVID-19 neutralizing antibodies prevent the interaction o f S protein RBD with ACE2 cell receptor, thus, preventing the entry of virus into the host.

 

Application of COVID-19 Neutralizing Antibody Detection³:

 

Post-vaccination

To check whether your body respond to vaccination and how much of this antibody is neutralizing

antibodies; assessment of potential antibody-associated immunity

Past – Infection

To identify individuals with past exposure

 

Key Features³

Sensitivity: 99.45%

Specificity: >99%

 

  • 98% Compliance Rate when compared with FDA EUA approved ELISA test kit
  • 99.45% Compliance Rate when compared with PRNT (“gold standard”)
  • CE-marked

References:

1- Jiang, S., Zhang, X., Yang, Y., Hotez, P. J., & Du, L. (2020). Neutralizing antibodies for the treatment of

COVID-19. Nature Biomedical Engineering, 4(12), 1134-1139.

2- Neutralizing Antibody of SARS-CoV-2 Test. Packing Insert.

3- Neutralizing Antibody of SARS-CoV-2 Test. Info Sheet.

Blood Cancer & COVID-19

Blood Cancer & COVID-19

Most blood cancers, also called hematologic cancers, begin in the blood-forming tissues such as the bone marrow or in the cells of the immune system.1 Blood cancers occur when the normal blood cell development process is interrupted by uncontrolled abnormal blood cell growth, preventing functions such as fighting off infections or stopping serious bleeding.2

 

The three main types of blood cancers are2:

  1. Leukemia – a type of cancer that occurs in your blood and bone marrow due to rapid production of abnormal white blood cells. The high level of abnormal white blood cells are not able to fight off infections and cause impairment in the production of red blood cells and platelets in the bone marrow.

 

  1. Lymphoma – a type of blood cancer that affects the lymphatic system; which removes excess bodily fluids and produces immune cells. Lymphocytes are white blood cells that fight off infection. Abnormal lymphocytes turn into lymphoma cells that multiply and collect in your lymph nodes and other tissue which overtime, will impair your immune system.

 

  1. Myeloma – cancer of the plasma cells. Plasma cells are white blood cells that produce antibodies to fight off diseases and infections in your body. Myeloma cells prevent the normal production of antibodies causing the body’s immune system to be weakened and susceptible to infection.

 

Blood cancer & COVID-19

As COVID-19 emerged, patients with blood cancers are at increased risk of severe COVID-19 infection and high mortality rate due to their compromised immune system and inability to receive necessary care in time.3, 4, 5, 6 Medical practitioners have to assess whether treatment plans should begin on schedule or delayed until a certain time.5, 6  Studies have shown that patients with blood cancers are more susceptible to severe COVID-19 infection than patients with solid cancers or healthy people, likely due to the immunosuppressive nature of their disease and/or treatments. However, researchers sought to discover if immunosuppression caused patients with blood malignancies to have a decreased immune response to the COVID-19 vaccines that are now being provided around the world. 

 

To refer for Pantai Premier Pathology tests related to Blood Cancer, please click on the below button.

CLICK HERE

 

For more information on the tests provided, please contact us at +603-42809115 (Customer Service) or email us at [email protected]

 

 

References

1- hematologic cancer. (n.d.). National Cancer Institute (NIH). Retrieved May 4, 2021, from https://www.cancer.gov/publications/dictionaries/cancer-terms/def/hematologic-cancer

2- Blood Cancers. (n.d.). American Society of Hematology. Retrieved May 4, 2021, from https://www.hematology.org/education/patients/blood-cancers

3- Ferrara, F., Zappasodi, P., Roncoroni, E., Borlenghi, E., & Rossi, G. (2020). Impact of Covid-19 on the treatment of acute myeloid leukemia. Leukemia, 34(8), 2254-2256.

4- He, W., Chen, L., Chen, L., Yuan, G., Fang, Y., Chen, W., … & Gale, R. P. (2020). COVID-19 in persons with haematological cancers. Leukemia, 34(6), 1637-1645.

5-  Burki, T. K. (2020). Cancer guidelines during the COVID-19 pandemic. The Lancet Oncology, 21(5), 629-630.

6- American Association for Cancer Research. (2021, February). Survival Factors ID’d for Patients with Blood Cancer + COVID-19. Cancer Discovery. https://cancerdiscovery.aacrjournals.org/content/11/2/214.2

 

Increase the Success Rate of IVF via PGS

Increase the Success Rate of IVF via PGS

 

In Vitro Fertilization (IVF) is an assisted reproductive technology (ART) to achieve pregnancy, where the process of fertilization is manually performed in a laboratory dish by combining extracted eggs and retrieved sperms. Once the fertilized eggs have multiplied, the embryos are then transferred to the uterus for a pregnancy to begin.1, 2, 3 This procedure is commonly conducted in couples who have difficulty in achieving pregnancy through unprotected regular intercource.2

Figure 1: The process of In Vitro Fertilisation (IVF).4

 

Who needs IVF treatment?

IVF can be used to treat infertility in the following cases1:

  • Unexplained infertility
  • Women with ovulation disorders; premature ovarian failure, uterine fibroids
  • Blocked or damaged fallopian tubes
  • Male factor infertility; reduced sperm count or motility
  • Individuals with genetic disorder

 

What is Preimplantation Genetic Screening (PGS)?

PGS is a specialised testing to screen whether cells from a cultured embryo contain any chromosomal abnormalities or balance number of chromosomes prior to implantation. PGS is highly recommended for patients with history of repeated unexplained miscarriages, recurrent IVF failures or couples with known abnormality in their chromosomal who worry passing it on to their offspring.

Common chromosomal abnormality PGS screens for are:

  1. Down Syndrome
  2. Patau Syndrome
  3. Edwards Syndrome
  4. Sex chromosomes abnormality

The process of PGS requires a small number of cells from the cultured embryos typically at day 5 (blastocyst stage) and cells are screened for normal number of chromosomes which is 46 (23 chromosomes inherited from each parents). If all chromosomes are intact with no abnormalities observed (called euploidy) then the embryo is suitable for implantation.6, 7, 10, 11, 12 Your fertility doctors will consult of the best embryos to implant in order to yield a successful pregnancy.

Figure 2: How Preimplantation Genetic Screening (PGS) Works.8

 

 

 

 

Reference

1- IVF – In Vitro Fertilization. (2019, April 24). American Pregnancy Association. https://americanpregnancy.org/getting-pregnant/infertility/in-vitro-fertilization-70966/

2- Brezina, P. R., & Zhao, Y. (2014). In Vitro Fertilization. ELSEVIER, 2014(3), 1–9. https://doi.org/10.1016/B978-0-12-801238-3.00262-2

3- Infertility FAQs. (n.d.). Division of Reproductive Health, National Center for Chronic Disease Prevention and Health Promotion. Retrieved April 8, 2021, from https://www.cdc.gov/reproductivehealth/infertility/index.htm

4- In Vitro Fertilisation. (2019, April). [Photograph]. Women’s Health Arm of Singapore Medical Group. https://smgwomenshealth.sg/news-articles/pgd-pgs-testing/

5- Harper, J. C., Geraedts, J., Borry, P., Cornel, M. C., Dondorp, W., Gianaroli, L., … & Macek, M. (2013). Current issues in medically assisted reproduction and genetics in Europe: research, clinical practice, ethics, legal issues and policy. European Journal of Human Genetics, 21(2), S1-S21.

6- De Rycke, M., & Sermon, K. (2010). Preimplantation Genetic Diagnosis. In Molecular Diagnostics (pp. 485-500). Academic Press.

7- Illumia. (2015). The STAR Trial [Brochure]. https://www.illumina.com/content/dam/illumina-marketing/documents/clinical/rgh/star-one-pager-web.pdf

8- Improving IVF outcomes with PGS. (n.d.). [Photograph]. Illumina. https://www.illumina.com/clinical/reproductive-genetic-health/preconception-fertility/pgs.html

9- Kimelman, D., Confino, R., Confino, E., Shulman, L. P., Zhang, J. X., & Pavone, M. E. (2018). Do patients who achieve pregnancy using IVF-PGS do the recommended genetic diagnostic testing in pregnancy?. Journal of assisted reproduction and genetics, 35(10), 1881–1885. https://doi.org/10.1007/s10815-018-1289-z

10- Improving IVF outcomes with PGS. (n.d.-b). Illumina. Retrieved April 9, 2021, from https://www.illumina.com/clinical/reproductive-genetic-health/preconception-fertility/pgs.html

11- Yang, Z., Liu, J., Collins, G. S., Salem, S. A., Liu, X., Lyle, S. S., Peck, A. C., Sills, E. S., & Salem, R. D. (2012). Selection of single blastocysts for fresh transfer via standard morphology assessment alone and with array CGH for good prognosis IVF patients: results from a randomized pilot study. Molecular cytogenetics, 5(1), 24. https://doi.org/10.1186/1755-8166-5-24

End TB, Save lives

End TB, Save lives

Persistent cough that lasts for more than 3 weeks with the presence of blood or mucus is a warning sign for a deadliest infectious disease known as Tuberculosis (TB).1, 2 TB bacteria spreads through air when someone with TB disease talks, coughs or sneezes.3 Individuals at risk for TB are those living with HIV and have close contact with TB patients and other at-risk groups such as patients undergoing dialysis, anti-TNF (tumor necrosis factor) treatment and patients preparing for an organ transplant.3 These individuals have weakened immune system which makes them vulnerable to getting infected.

Individuals with latent TB infection have TB bacteria in their bodies but are not sick, do not display symptoms or cannot spread the bacteria to others because the bacteria are not active. However, these individuals may develop TB disease in the future, hence, they are often prescribed treatment to prevent from developing TB disease. Whereas, individuals with TB disease are sick from TB bacteria that are active, multiplying and destroying tissues in their body. These individuals usually display symptoms of the TB disease and are able to spread the bacteria to others.6

TB is a preventable and curable disease, however, a person with TB can die if they do not get treatment on time.5, 6 Most TB cases are reported to progress from latent TB infection (LTBI) rather than local transmission, especially in those whose immune systems are weakened. Hence, the transmission of the infectious TB can be prevented through prompt case finding and treatment of LTBI as a crucial strategy to achieve the elimination of TB.7, 8, 9

At Pantai Premier Pathology, we provide tests for Tuberculosis (TB):

  1. TB Serology Rapid Test
  2. MYCOBACTERIUM TB DNA PCR (FFPE TISSUE)
  3. MYCOBACTERIUM TB DNA PCR
  4. Mycobacterium TB Rifampin Resistance
  5. Mycobacterium Culture
  6. Mycobacterium Identification
  7. Mycobacterium Sensitivity

For more information on the tests provided, please contact us at +603-42809115 (Customer Service) or email us at [email protected].

 

Reference

1- Signs & Symptoms. (n.d.). Centers for Disease Control and Prevention: Division of Tuberculosis Elimination. Retrieved March 8, 2021, from https://www.cdc.gov/tb/topic/basics/signsandsymptoms.htm

2- Tuberculosis (TB). (n.d.). NHS. Retrieved March 8, 2021, from https://www.nhs.uk/conditions/tuberculosis-tb/

3- How to Protect Ourselves from TB. (n.d.). World Health Organization. Retrieved March 11, 2021, from https://cdn.who.int/media/docs/default-source/campaigns-and-initiatives/world-tb-day-2020/how-to-protect-ourselves-from-tb.pdf?sfvrsn=ba76911a_2

4- Tuberculosis: General Information What is TB? (n.d.). Centers for Disease Control and Prevention: Division of Tuberculosis Elimination. Retrieved March 11, 2021, from https://www.cdc.gov/tb/publications/factsheets/general/tb.htm

5- Tuberculosis (TB). (n.d.-b). Centers for Disease Control and Prevention. Retrieved March 8, 2021, from https://www.cdc.gov/tb/publications/factsheets/general/tb.htm

6 – World Tuberculosis Day 2021: THE CLOCK IS TICKING. (n.d.). World Health Organization. Retrieved March 10, 2021, from https://www.who.int/campaigns/world-tb-day/world-tb-day-2021

7- Latent TB Infection and TB Disease. (2016). Centers for Disease Control and Prevention. https://www.cdc.gov/tb/topic/basics/tbinfectiondisease.htm

8- Lönnroth, K., Migliori, G. B., Abubakar, I., D’Ambrosio, L., De Vries, G., Diel, R., … & Ochoa, E. R. G. (2015). Towards tuberculosis elimination: an action framework for low-incidence countries. European Respiratory Journal, 45(4), 928-952.

9- Dobler, C. C., Martin, A., & Marks, G. B. (2015). Benefit of treatment of latent tuberculosis infection in individual patients. European Respiratory Journal, 46(5), 1397-1406.

 

 

Preventing the transmission of Covid-19 with proper testing and vaccination

Preventing the transmission of Covid-19 with proper testing and vaccination

It has been more than a year since we have been battling against the COVID-19 pandemic. The World Health Organization declared the rapidly spreading coronavirus outbreak a pandemic on 11 March 2020, acknowledging the spread of the virus to all countries across the globe.1 This has become an alarming situation as the number of daily cases increased significantly.

 

As part of the effort to respond to the COVID-19 pandemic, health screening tests for Covid19 were implemented to identify Covid19 positive cases and to ensure the safety of the people at large. This measure was taken to contain the spread of the virus and to prevent further disease transmission.2 The common Covid-19 tests include RT-PCR Covid19 test and rapid Covid-19 test.

 

The RT-PCR Covid19 test is usually analyzed in a lab. The rapid Covid19 test on the other hand includes the rapid PCR test and Covid antigen test. For rapid PCR test, the sample can be analyzed at the point-of-care, such as at the clinic itself. Antigen tests are often simpler and may provide results quicker than other molecular tests. Although antigen tests can be less accurate and may need additional diagnostic confirmation tests, they can be made more widely available because they are easy and simple.

 

Which Covid-19 test do you need? 4, 5

 

Other efforts to respond to the COVID-19 pandemic is the race to develop and deploy safe and effective vaccines. Vaccines save lives by training and gearing up the body’s natural defence system (immune system) to distinguish and fight off viruses and bacteria. The body will be ready to immediately destroy any disease-causing germs they encounter later once they get exposed to them.6

Figure 1. How do vaccines work?7

(link for image: https://www.immunology.org/celebrate-vaccines/public-engagement/guide-childhood-vaccinations/how-vaccines-work)

Equitable access and distribution of the Covid-19 vaccine will be facilitated to protect the people, with people most at risk prioritized. While the work towards deploying a safe and effective vaccine is under going, it is important to protect yourself and others from infection by washing your hands or using hand sanitizers frequently.1, 6

 

At Pantai Premier Pathology, we provide Covid-19 tests:

COVID-19 TEST TEST CODE
Covid RT-PCR Test COVID19
Covid Rapid PCR Test (FilmArray) FACOVID
Covid Antigen Test COVIDAG
Covid Antibody Test COVIDAB
FilmArray Respiratory Panel 2.1 Plus FARP3P

 

For more information on the tests provided, please contact us at +603-42809115 (Customer Service) or email us at [email protected]

 

 

Reference

1- Archived: WHO Timeline – COVID-19. (2020, April 27). World Health Organization. https://www.who.int/news/item/27-04-2020-who-timeline—covid-19

2- Shah, A. U. M., Safri, S. N. A., Thevadas, R., Noordin, N. K., Abd Rahman, A., Sekawi, Z., … & Sultan, M. T. H. (2020). COVID-19 outbreak in Malaysia: Actions taken by the Malaysian government. International Journal of Infectious Diseases, 97, 108-116.

3- Coronavirus Disease 2019 Testing Basics. (n.d.). U.S. Food and Drug Administration (FDA). Retrieved January 27, 2021, from https://www.fda.gov/consumers/consumer-updates/coronavirus-disease-2019-testing-basics

4- COVID-19: contact tracing. (n.d.). World Health Organization. Retrieved February 1, 2021, from https://www.who.int/westernpacific/emergencies/covid-19/information/covid-19-testing

5- Antibody (Serology) Testing for COVID-19: Information for Patients and Consumers. (n.d.). U.S. Food and Drug Administration (FDA). Retrieved February 1, 2021, from https://www.fda.gov/medical-devices/coronavirus-covid-19-and-medical-devices/antibody-serology-testing-covid-19-information-patients-and-consumers

6- COVID-19 vaccines. (n.d.). World Health Organization. Retrieved February 1, 2021, from https://www.who.int/emergencies/diseases/novel-coronavirus-2019/covid-19-vaccines

7- How vaccines work. (n.d.). British Society for Immunology. Retrieved February 3, 2021, from https://www.immunology.org/celebrate-vaccines/public-engagement/guide-childhood-vaccinations/how-vaccines-work