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ALL REQUESTS MUST BE THROUGH ILAB.
We are currently short staffed but accepting CBC, QNMR, Histology and Anatomic Pathology requests.
We do NOT accept hazardous materials or human specimens.
Due to staffing we can not accept Serum or Plasma chemistry tests at this time.
Mission: The Phenotyping Core promotes preclinical translational science at Johns Hopkins, by assisting and collaborating in the characterization and use of genetically and phenotypically relevant animal models of disease and gene function, by:
Services/collaborations include:
Grant support: (%FTE) collaborations should be developed for large and long term projects involving pathology.
Authorship: Johns Hopkins authorship guidelines can be found at https://www.hopkinsmedicine.org/som/faculty/policies/index.html. Pathology support and collaboration frequently involve acquisition, analysis and interpretation of data, as well as contributions to study design, images and manuscript preparation that warrant authorship.
Acknowledgments: Cores should be acknowledged in publications.
Leadership
Cory Brayton, DVM - Director Phenotyping Core
Diplomate, ACLAM, ACVP
Phone: 410-502-3050
Email: cbrayton@jhmi.edu **preferred contact
Susan Aja, PhD
CSMR, QNMR coordinator
saja1@jhmi.edu
Location and hours of operation
| Hours | Location |
|
Monday - Friday 9:00am - 5:00pm |
733 North Broadway Office Phone: 410-502-3050 |

| Name | Role | Phone | Location | |
|---|---|---|---|---|
| Cory Brayton, DVM, DipACVP |
Director
|
410-502-3050
|
cbrayton@jhmi.edu
|
MRB; Suite 851
|
| Susan Aja, PhD |
QNMR coordinator
|
443 287 7671
|
saja1@jhmi.edu
|
Rangos 473
|
| Service list |
| ► Anatomic Pathology (4) | |||
| Name | Description | Price | |
|---|---|---|---|
| Custom Collections/Procedures |
|
Inquire | |
| Mouse 10 slide /40 tissue evaluation/report |
|
Inquire | |
| Mouse Perfusion |
|
Inquire | |
| Mouse Terminal Blood Collection |
|
Inquire | |
| ► Clinical Pathology (14) | |||
| Name | Description | Price | |
| Hematology: Automated blood cell count (CBC) |
Specimens (with accurate/completed request printouts with iLAB service project ####, and accurate specimen information) should be received in lab by 4pm. |
Inquire | |
| Clinical Chemistry: tests/panels |
NOT available at this time. |
Inquire | |
| Clinical Chemistry: Blood Serum/Plasma Separation |
Limited availability: Microvettes/Microtainers/ Eppendorfs <2ml only. |
Inquire | |
| Fecal occult blood | Inquire | ||
| Glucometry: In Lab | Inquire | ||
| Glucometry: Investigator Use | Inquire | ||
| Hematology/Cytology: Cell count by Hemocytometer |
NOT available at this time. |
Inquire | |
| Hematology/Cytology: Cytospin Investigator Use |
Consumables not provided. |
Inquire | |
| Hematology/Cytology: Hema3 staining |
NOT available at this time. |
Inquire | |
| Hematology/Cytology: Manual Differential |
NOT available at this time. |
Inquire | |
| Hematology: Terminal blood collection | Inquire | ||
| Urinalysis: Dipstick | Inquire | ||
| Urinalysis: Sediment analysis |
NOT available at this time. |
Inquire | |
| Urinalysis: Refractometer Specific Gravity | Inquire | ||
| ► Experimental Pathology (RAR Necropsy) - Large Animal (4) | |||
| Name | Description | Price | |
| RAR Necropsy Room Use |
|
Inquire | |
| RAR Necropsy Technician |
|
Inquire | |
| RAR Necropsy BSL-2 (PPE) |
|
Inquire | |
| RAR/MCP Veterinary pathologist |
|
Inquire | |
| ► Histology RAR/MCP: Processing etc (10) | |||
| Name | Description | Price | |
| Processing/embedding/H&E |
Specimen: Fixed tissue, trimmed properly, in cassettes labelled correctly in pencil BEGINNING MAY 1 2025: $10ea |
Inquire | |
| Step/skip or EXTRA sections on H&E/unstained etc slide |
Specimen: Block |
Inquire | |
| RUSH etc special processing /scheduling |
Specimen: Fixed/cassette RUSH: $10 per block/slide SPECIAL PROCESSING scheduling: From $20 (e.g. from EtOH, schedule change) Check for availability/cost: Shana Lee <slee461@jhmi.edu> IN ADVANCE |
Inquire | |
| Process/Embed ONLY (no slides) |
Specimen: Fixed/cassette |
Inquire | |
| Decalcify (Formic acid / EDTA / other) |
Specimen: Boney Tissue From $5/piece Contact Us |
Inquire | |
| Surface decal, Downy or other special handling for hard tissues |
Specimen: Block Price per block/slide: $4.00 |
Inquire | |
| Grossing/trimming etc special handling |
Specimen: Fixed Tissue NOT in labelled cassettes OR requiring additional trimming |
Inquire | |
| Slide Box (100 slides plastic) |
$20 ($50 new) |
Inquire | |
| Slide Box (5 slide plastic) |
Price: $5 ($50 new) |
Inquire | |
| Slide Flat (20 slide) |
Price $15 ($50 new) |
Inquire | |
| ► Histology RAR/MCP: Special Stains etc (27) | |||
| Name | Description | Price | |
| Acid Fast Ziehl-Neelsen | Inquire | ||
| Alcian Blue | Inquire | ||
| Feulgen reaction (Nucleic acid) | Inquire | ||
| Giemsa | Inquire | ||
| GMS Gomori Methenamine Silver (fungus) | Inquire | ||
| Gram - Goodpasture's | Inquire | ||
| Halls Bilirubin | Inquire | ||
| LFB Luxol Fast Blue | Inquire | ||
| LFB/pas | Inquire | ||
| Mucicarmine |
CHECK FOR AVAILABILITY |
Inquire | |
| PAS Periodic Acid Schiff | Inquire | ||
| PAS/Alcian Blue |
CHECK FOR AVAILABILITY |
Inquire | |
| Perls Prussian Blue (Ferric Fe+3 iron) | Inquire | ||
| Picrosirius Red |
CHECK FOR AVAILABILITY |
Inquire | |
| PTAH PhosphoTungstic Acid Hematoxylin | Inquire | ||
| Reticulin Stain Gomori (silver) |
CHECK FOR AVAILABILITY |
Inquire | |
| Rubeanic Acid (Copper) | Inquire | ||
| Steiner Modified (silver) |
CHECK FOR AVAILABILITY |
Inquire | |
| Toluidine Blue | Inquire | ||
| Trichrome Masson's (collagen) | Inquire | ||
| Von-Kossa (mineral/’calcium’) | Inquire | ||
| Warthin Starry (silver) | Inquire | ||
| Deparaffinize (unstained slide) |
Specimen: Unstained Slide |
Inquire | |
| Cover Slipping (Glass) |
Specimen: Slide |
Inquire | |
| Destain (+ remove coverslip) |
Specimen: Slide |
Inquire | |
| Re embed |
Specimen: Block |
Inquire | |
| Histo Miscellaneous |
Miscellaneous charges e.g. limited numbers of cassettes containers fixative Contact us. |
Inquire | |
| ► Phenotyping: QNMR (1) | |||
| Name | Description | Price | |
| QNMR Body Composition | Inquire | ||
| ► Phenotyping: Other (2) | |||
| Name | Description | Price | |
| Faxitron |
NOT available at this time. |
Inquire | |
| Faxitron (film) |
NOT available at this time. |
Inquire | |