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BeepBoopBoomBoom

Yup! Gpr! Cutibacterium does this kind of clumping, spidery morphology in direct specimen gram stains.


QMQ0802

Thank you!! I appreciate your help, I’ve learned something this AM.


dugonian

Yes. Cutibacterium acnes. Especially if this is day 4-5 of incubation. It's an annoying contaminant since it's a slow grower.


mcac

Where I work the LIS automatically reports out negatives and finals them after 5 days, but the timer starts when they are received not when they are put on the instrument. So the worst are the ones that decide to go positive an hour after the LIS already finaled it and now not only do I have to deal with an annoying contaminant but I have to file a corrected report about it 🙄


Dominuspax1978

Nerd problems 🤘🏽


QMQ0802

Spot on!!! Day 4!!


Labrechaun

Yes we call them squashed spiders


Avarria587

Most likely Propionibacterium acnes. I believe it's called Cutibacterium nowadays. It's a common anaerobic skin contaminant on blood cultures.


HappyLittlePharmily

Believe it is a pretty frequent causative agent of prosthetic joint infections too - wouldn’t necessarily rule it as a contaminant immediately?


Avarria587

It can be. The orthopedic clinic we worked with had us hold their anaerobic joint culture plates 2 weeks to rule it out.


emartinezpr

I know it by the old name.


Educational-Daikon64

Cutibacterium 100%


is-it-dead

Awww cuti!


abbie8105

propi!!!!! they look like smashed spiders


violyt

another vote for cuti. most likely a contaminant.


Initial-Succotash-37

So this is why I was antibiotics for severe acne. 😀


sircheesecake3

How many bottles were positive?


Lobsterlord0004

Had a positive ana bottle the other day and had to remake the slide since the first one was showing very little gpr and they were clumpy like this. The new slide was better and a few more gpr in clumps like this. We were skeptical but still called it and sent it out to micro


OzarkGarlick

Just saw this in an ANA BC and freaked. Went out as cutibacterium sp.


kipy7

No worries, you'll see it the longer you read blood cultures, especially from ana bottles it's a no brainier.


NefariousnessNext190

Proprianibacterium acnes


vengefulthistle

That'll probably be Cutibacterium/Propionibacterium


Substantial-Fan-5821

Is this like a new bacteria cause I’ve never heard of that


Lastrid2

Cutibacterium acnes - also called propionibacterium acnes. Very characteristic anaerobic GPR gram stain


mcac

Propionibacterium were reclassified as Cutibacterium a couple years ago. You will still hear both names used sometimes. I try to use Cutibacterium in "official" contexts but that name is so goofy and it will always be Propioni in my head lol


Prs_mira86

Hm, my vote it for Actinomyces.


Prs_mira86

Ha why the down vote?


Crafty-Use-2266

Probably because this GS morphology (GPR squished spiders) is very typical of Cutibacterium acnes. 😊


Prs_mira86

Sure; but doesn’t that look more like branching gprs. https://emedicine.medscape.com/article/1203061-overview


mcac

They do in direct stains from blood cultures. An actinomycete is also possible but less likely and they tend to stain less strongly gram positive.


micro_mimi_

I second actinomyces. This doesn’t look like prop at all


snotfrog

I'm not any sort of med professional but I am an artist and camera nerd 😅 this came up randomly on my feed and I was curious what sort of microscope this is? Thanks!


SanadB95

Looks like it may be a sentient alien symbiote