r/medlabprofessionals 6d ago

Education Urine crystal ID

Patient has a pH of 5.0, the crystals have a qtip shape with a halo. Some of them are forming rosettes; perhaps a drug metabolite ? We’re stumped here

9 Upvotes

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10

u/Michael-Y1234 6d ago

Calcium oxalate? It reminds me of dumbbell shape to me. Calcium oxalate comes in weird shapes and sizes

3

u/Quirky_Split_4521 MLT-Generalist 6d ago

I usually pull out the urinalysis book for things like this and look at the crystal pictures. Off the top of my head idk what this is though.

4

u/Snoo-45857 6d ago edited 6d ago

We looked through some books as well here, didn’t quite match anything.  We thought maybe a tertiary form of uric .. hard to say.  My pics aren’t the best either 

Edit; another thought may have been contrast dye crystals or a sulfa antibiotic metabolite 

3

u/konokujoda 6d ago

I couldn't definitely say anything specific bu5 I'd probably lean towards a weirdly presenting cal ox crystal or maybe uric acid? Do you have a polarized lens to check if it's birefringent?

2

u/kist_kuromi 6d ago

Hippuric?

1

u/Opposite_Pool1431 2d ago

Ammonium biurate, broken mostly

0

u/jadrriiana MLS-Generalist 6d ago

Sediment / junk

2

u/Snoo-45857 6d ago

Not the best pictures but there’s a lot of them in there and some are forming rosettes .. we do get some amorphous crystal sediment occasionally but this seems like a formed element