Was There Ever a Confirming Biological Test?

Introduction

No publicly available evidence shows that chromosome testing ever confirmed that the Cash–Landrum witnesses received a significant dose of ionising radiation. Supportive accounts of the case have long referred to chromosome testing or chromosome damage, but no laboratory report, methodology, raw data, numerical chromosome-aberration counts or independent expert interpretation has been released for scientific or medical scrutiny. That absence matters because chromosome-aberration analysis is one of the most important biological methods for estimating radiation dose when no physical dosimeter was present. If convincing results existed and were available for review, they would represent some of the strongest evidence for radiation exposure. Instead, the claim rests on references to unpublished testing whose findings cannot be independently evaluated.

How chromosome damage can estimate radiation dose

Chromosome-aberration analysis, often called biological dosimetry, examines blood lymphocytes for characteristic chromosome changes produced by ionising radiation. The best-established method counts unstable abnormalities known as dicentric chromosomes, while fluorescence in situ hybridisation (FISH) can identify stable chromosome translocations that persist for longer periods after exposure. These techniques are internationally recognised tools for reconstructing radiation dose following suspected accidents.[gov.uk]GOV.UKDoses in radiation accidents investigated by chromosomal aberration analysisDoses in radiation accidents investigated by chromosomal aberration analysis

Their value comes from several features:

Because of this established role, chromosome testing occupies a unique place in the Cash–Landrum debate. Unlike symptom descriptions, which can have many possible causes, cytogenetic testing can provide objective biological evidence of previous radiation exposure when performed appropriately.

What has been claimed about the witnesses’ testing

Over the years, UFO literature and interviews have asserted that chromosome studies were performed on one or more of the witnesses and that abnormalities were reportedly found. However, these accounts consistently stop short of providing the information needed for scientific evaluation.

Publicly available descriptions do not disclose:

Without these details, the reported testing cannot be assessed against accepted standards for biological dosimetry. References to “chromosome damage” alone are insufficient because chromosome abnormalities can arise from many sources and must be interpreted within a validated analytical framework.

Importantly, no peer-reviewed publication describing chromosome results from the Cash–Landrum witnesses has entered the scientific literature despite decades of interest in the case.

Why unpublished results cannot settle the case

Biological dosimetry is not simply a matter of detecting any chromosome abnormality. Modern practice requires careful laboratory methods, quality control and statistical interpretation.

Specialists evaluating suspected radiation exposure normally report measurable quantities such as:

Without these elements, it is impossible for independent experts to determine whether observed abnormalities, if any, were compatible with a medically significant radiation dose.

Radiation biodosimetry also has recognised limitations. Small numbers of chromosome abnormalities can produce large statistical uncertainties, while delayed sampling, partial-body exposure and individual biological variation complicate dose estimation. Consequently, even genuine chromosome findings require careful interpretation rather than being treated as automatic proof of exposure.[UK Health Security Agency]researchportal.ukhsa.gov.ukUK Health Security AgencyLimitations associated with analysis of cytogenetic data for biological dosimetry - UK Health Security AgencyOct…

Why the missing data matter in this case

The Cash–Landrum incident is unusual because the alleged radiation exposure was never accompanied by a documented physical measurement of radiation dose. No verified environmental measurements, contaminated materials or personal dosimeters were available to reconstruct exposure.

That makes biological evidence especially important. Had chromosome-aberration testing demonstrated a substantial absorbed dose consistent with the reported illnesses, it would have provided an independent line of evidence supporting the radiation hypothesis.

Instead, the publicly available record contains only assertions that testing occurred, without the underlying documentation needed for verification. As a result:

This evidential gap has remained unchanged despite the case’s prominence within UFO literature.

The current evidential assessment

From a medical and scientific perspective, the chromosome-testing question remains unresolved rather than supportive.

The strongest evidence available shows that chromosome-aberration analysis is indeed one of the most reliable biological indicators of significant radiation exposure when properly performed and documented.[nih.gov]pubmed.ncbi.nlm.nih.govImprovement of accuracy of chromosome aberration analysis for biological radiation dosimetry - PubMed…

However, in the Cash–Landrum case, no reviewable laboratory report demonstrating such evidence has been publicly produced. Consequently, chromosome testing cannot presently be cited as confirmation that the witnesses received a radiation dose capable of explaining their reported illnesses.

The distinction is important. The issue is not whether chromosome testing could have answered the question—it is one of the best available methods for doing so. Rather, the problem is that the purported results have never been released in a form that allows independent scientific assessment. Until such documentation becomes available, chromosome testing remains an often-cited but unverified element of the case rather than confirmed biological proof of radiation exposure.

Amazon book picks

Further Reading

Books and field guides related to Was There Ever a Confirming Biological Test?. Use these as the next step if you want deeper reading beyond the article.

Book

Radiobiology for the Radiologist

By Eric J. Hall, Amato J. Giaccia

In print since 1972, this seventh edition of Radiobiology for the Radiologist is the most extensively revised to date. It consists of two...

See on Amazon

Book

Medical Effects of Ionizing Radiation

By Fred A. Mettler, Arthur C. Upton

"The new edition of this monograph features renowned experts who offer the most current information and reliable guidance on all aspects...

See on Amazon

Book

Basic clinical radiobiology

By Michael Joiner, Albert Kogel

First published 2009. Subjects: Radiotherapy, Radiobiology, Neoplasms, Cell Survival, Radiation effects.

See on Amazon

Book

Medical Management of Radiation Accidents

By Igor Gusev, Angelina Guskova et al.

Although radiation accidents are rare and often complex in nature, they are of great concern not only to the patient and involved medical...

See on Amazon

Browse more on Amazon:Radiobiology for the RadiologistMedical Effects of Ionizing RadiationBasic clinical radiobiology

As an Amazon Associate I earn from qualifying purchases.

eBay marketplace picks

Marketplace Samples

Live-tested eBay searches with available results related to this page.

Shop location

UsingUSA USA USAUKCanadaAustraliaIreland

Selected fromUFO poster oneBay.co.uk.

Current eBay listing

FS02 VINTAGE UFO FLYING SAUCERS COMIC ADVERTISING A4 POSTER PRINT

GBP 4.71 | Free shippingNewSeller: andys-prints-uk (99.6% positive)Ships from: GB

View listing on eBay

Current eBay listing

VINTAGE UFO FLYING SAUCERS COMIC ADVERTISING A2 POSTER PRINT

GBP 10.76 | Free shippingNewSeller: andys-prints-uk (99.6% positive)Ships from: GB

View listing on eBay

Current eBay listing

I Want To Believe UFO Poster Print The X-Files Television TV A5 A4 A3 Art Print

GBP 5.99 | Free shippingNewSeller: the finepaper house (99.1% positive)Ships from: GB

View listing on eBay

Current eBay listing

COOL FLYING UFO IN FOREST LANDSCAPE FRAMED WALL ART PICTURE POSTER PRINT

GBP 39.99 | Free shippingNewSeller: canvas monkey (99.8% positive)Ships from: GB

View listing on eBay

Browse more oneBay.co.uk

Example items shown for inspiration; availability and pricing can change. Branchoria may earn a commission if you purchase through outbound eBay links.

Endnotes

1. Source: GOV.UK
Title: Doses in radiation accidents investigated by chromosomal aberration analysis
Link:https://www.gov.uk/government/publications/radiation-doses-investigated-by-chromosomal-aberration-analysis-2016-to-2023/doses-in-radiation-accidents-investigated-by-chromosomal-aberration-analysis

2. Source: researchportal.ukhsa.gov.uk
Title: UK Health Security Agency Chromosomal analysis to assess radiation dose
Link:https://researchportal.ukhsa.gov.uk/en/publications/chromosomal-analysis-to-assess-radiation-dose/

3. Source: researchportal.ukhsa.gov.uk
Link:https://researchportal.ukhsa.gov.uk/en/publications/fluorescence-in-situ-hybridization-detection-of-chromosomal-aberr/

4. Source: researchportal.ukhsa.gov.uk
Link:https://researchportal.ukhsa.gov.uk/en/publications/limitations-associated-with-analysis-of-cytogenetic-data-for-biol/

5. Source: researchportal.ukhsa.gov.uk
Link:https://researchportal.ukhsa.gov.uk/en/publications/x-ray-biological-dosimetry-performed-by-selective-painting-of-hum/

6. Source: researchportal.ukhsa.gov.uk
Link:https://researchportal.ukhsa.gov.uk/en/publications/a-collaborative-exercise-on-cytogenic-dosimetry-for-simulated-who/

7. Source: researchportal.ukhsa.gov.uk
Link:https://researchportal.ukhsa.gov.uk/en/publications/a-study-to-verify-a-reported-excess-of-chromosomal-aberrations-in/

8. Source: youtube.com
Title: The Cash-Landrum UFO Mystery
Link:https://www.youtube.com/watch?v=P2HsOUTzyWA

9. Source: youtube.com
Title: The Cash
Link:https://www.youtube.com/watch?v=t6sV0LIy7GI

10. Source: pubmed.ncbi.nlm.nih.gov
Link:https://pubmed.ncbi.nlm.nih.gov/20726714/

11. Source: pubmed.ncbi.nlm.nih.gov
Link:https://pubmed.ncbi.nlm.nih.gov/10838805/

12. Source: pubmed.ncbi.nlm.nih.gov
Link:https://pubmed.ncbi.nlm.nih.gov/23862692/

13. Source: pubmed.ncbi.nlm.nih.gov
Link:https://pubmed.ncbi.nlm.nih.gov/15963536/

14. Source: pubmed.ncbi.nlm.nih.gov
Link:https://pubmed.ncbi.nlm.nih.gov/4076405/

15. Source: pubmed.ncbi.nlm.nih.gov
Link:https://pubmed.ncbi.nlm.nih.gov/16238438/

Additional References

16. Source: brunel.ac.uk
Link:https://www.brunel.ac.uk/news-and-events/news/articles/Chromosomal-DNA-study-of-nuclear-test-veterans-finds-no-evidence-of-historical-radiation-exposure

Published: January 9, 2024

17. Source: academic.oup.com
Title: A. Sharpe Heather B. A. Sharpe Radiotherapy Research Unit, Institute
Link:https://academic.oup.com/bjr/article/42/504/943/7304892

18. Source: youtube.com
Title: Cash-Landrum UFO Encounter or Something Scarier?
Link:https://www.youtube.com/watch?v=j_3CfT4I9nk

19. Source: youtube.com
Title: The Medically Documented Unexplainable Injuries of [Betty Cash]({{ ‘betty-cash/’ | relative_url }}) And [Vickie Landrum]({{ ‘vickie-landrum/’ | relative_url }})
Link:https://www.youtube.com/watch?v=osfZeJz7Cik

20. Source: sciencedirect.com
Link:https://www.sciencedirect.com/science/article/abs/pii/S1383571897001666

21. Source: tandfonline.com
Link:https://www.tandfonline.com/doi/abs/10.1080/09553009514550351

22. Source: jstage.jst.go.jp
Link:https://www.jstage.jst.go.jp/article/jrr/41/1/41_1_1/_article/-char/en

23. Source: youtube.com
Title: Did Aliens Cause This Family Health Problems? | Cash-Landrum Incident
Link:https://www.youtube.com/watch?v=cFz7hXTJDkU

24. Source: ukhsa-protectionservices.org.uk
Title: UKHS A Chromosome Dosimetry Services
Link:https://www.ukhsa-protectionservices.org.uk/cds/services/chromosomedosimetry/rangeoftests

25. Source: decur.org
Title: Cash-Landrum Incident
Link:https://decur.org/cases/cash-landrum-1980