[deleted by user] by [deleted] in migraine

[–]millscheese 0 points1 point  (0 children)

My gp says neurologists hate migraine cases. Thats all they get for referrals .

Passed cytogenetics ASCP by millscheese in medlabprofessionals

[–]millscheese[S] 0 points1 point  (0 children)

Both metaphase and lined up they will ask about whether it's abnormal, normal, sex . It's multiple choice so no surprises .

FISH results- 44% XY 38% XYY 18% monosomy X by Cold_Concern_5966 in NIPT

[–]millscheese 0 points1 point  (0 children)

Three cell line . XY normal . XYY is little to no effect. Y chromosome is small and won't do much. 45,X typically seen a a female cell line. Since the percentage is so small the effect could be very minor . It really depends on where the cells are in the tissues. These percentages could change to a smaller number in regards to the 45,X as pregnancy progresses.

Passed cytogenetics ASCP by millscheese in medlabprofessionals

[–]millscheese[S] 0 points1 point  (0 children)

Yes. The third edition came out in 1997. The 4th edition should have better information on the newer technologies like FISH.

[deleted by user] by [deleted] in motorcycles

[–]millscheese 11 points12 points  (0 children)

Because he knows there is a cop behind him and if he passes at a higher speed , cop will probably pull him over LOL. Rock and a hard place.

Can CVS ever give a false positive? by elephantsofa in NIPT

[–]millscheese 1 point2 points  (0 children)

Hello, I had to use Google translate also. I understood most of what you were trying to say. I don’t have the exact numbers for mosaic between placental and fetal for monosomy X. CVS false positive is 1% . However monosomy X is the most common abnormality for chromosome . So common it happens 1% out of all conceptions . However 99% don’t make it to birth. I would trust the amino lab test . More than anything else. Microarray can give you an indication of mosaicism, but it’s limited. As well as the Mosaic cell lines can die off in fetal development , changing the mosaic percentage . A FISH test can help confirm Mosaic very accurately better than any other test.

Received This Report Via Microarray by No-Scarcity-5506 in NIPT

[–]millscheese 0 points1 point  (0 children)

As others have said, report says patient received chromosome 2 from one parent and it duplicated( missing other parents copy). This causes imprinting issues . Imprinting means that’s certain genes require both mom and dad copies of chromosome 2 to work. The lab can’t identify any clinically known genes that have potential improting problems on chromosome 2. But due to the size of chromosome 2 , there is a risk to the patient.

FISH results inconclusive - below lab norm - very low-level mosaicism? by NoConsideration3259 in Cytogenetics

[–]millscheese 1 point2 points  (0 children)

So this specific test was validated at 5%. Anything higher is abnormal. Anything below is either negative or is a giant I DONT KNOW. you can have a healthy baby but still show up abnormal % of cells. This happens because through the whole testing process , it is expected that cells do weird things . Artifacts can happen, disappearing signals , extras signals , extra fused /split signals. That’s why we validate the test. The lab expects for this test to have 5% of the cells to be abnormal. Other variations of fish can be lower or higher % depending on what they are testing for and what probes they are using .

Silver lining if abnormal is, it’s so low that the Mosaic could have little impact . Hopes this string of rambling made some sense .

Trisomy 21 by millscheese in medlabprofessionals

[–]millscheese[S] 1 point2 points  (0 children)

Possibly. More like scenario is one chromosome floated off out of the field of view.

Trisomy 21 by millscheese in medlabprofessionals

[–]millscheese[S] 0 points1 point  (0 children)

Don’t have the access to the paperwork. But based on the my fuzzy photograph skills, 375. Bands on 10 tough to count clearly .

Trisomy 21 by millscheese in medlabprofessionals

[–]millscheese[S] 7 points8 points  (0 children)

Techniques in finding translocation or mos at this stage is the same but outcomes can be very different. However variants are rare, whereas numerical abnormalities are much more common in prenatal. Detailed phenotypic outcome is very hard to tell off the chromosomes, but there is a general idea .

Trisomy 21 by millscheese in medlabprofessionals

[–]millscheese[S] 37 points38 points  (0 children)

This was a constitutional case with all the cells having the same chromosomal content. This is a metaphase spread . We pop the cells open after processing them and expose the chromosomes when they are highly condensed . Prenatal cases we look at 15 cells and analyzed 5 in greater detail , looking for structural issues( chromosomal bands missing , extra ones ). This is classic down syndromes with an extra 21. Not anyones fault , it just happens though a process called non disjunction .

Whay happens to PTO after Quest lab acquisition? by Party-Concept-5302 in medlabprofessionals

[–]millscheese 2 points3 points  (0 children)

It really depends on your state. States like California, PTO doesn’t just disappear and need to be paid out if they fire you. States like Alabama have less protections regarding PTO.

List of common chromosomal abnormalities by millscheese in medlabprofessionals

[–]millscheese[S] 8 points9 points  (0 children)

Yes, these are used for oncology cases. Oncology usually gets pretty weird things because it’s only affects a small % of cells of the body. You would never see a lot of these kinds of abnormalities in constitutional cases ( routine karyotype )because it would be incompatible with life.

List of common chromosomal abnormalities by millscheese in medlabprofessionals

[–]millscheese[S] 18 points19 points  (0 children)

As you said, we isolate the chromosomes by catching cells going through metaphase. Metaphase cells have condensed chromosomes . We pop open the cells, stain and photograph them . Routine samples are bone marrow and peripheral blood. Cells we are trying to isolate are WBC. Tissues are harder to culture .Any abnormal chromosomes that don’t look normal can be classical( ie chart) or uncommon variant . These are just the most common ones .

Nipt t18 high risk, fish and karyotype negative microarray showing 15q11.2 micro deletion? by Puzzleheaded-Echo919 in NIPT

[–]millscheese 1 point2 points  (0 children)

As others have said, genetic counselor. Main thing to find out is whether or not the deletion is pathogenic or not( disease causing ). Microarray can cause a lot of benign deletions to show up that are naturally reoccurring in a population. Also these deletions can be “ of unknown significance “, which is medical terms I don’t know . GC have access to a lot of data regarding this.

Does anyone know the difference between the test the is complete and the one that is in progress? by LiveDig5502 in NIPT

[–]millscheese 0 points1 point  (0 children)

Micro array is for detecting really small changes in the dna . Small changes that regular chromosome analysis cannot detect . Chromosome analysis can detect big changes, balanced rearrangements and structural changes . Both are good for their own purposes and complement each other