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Lab Test Dictionary

C4d, IHC without Interp

Specimen Type


Performing Lab

Quest Diagnostics Chantilly (TSO)

Epic ID

Other Reference Test

Lab Test Days


Standard TAT

1 Day

Collection Information

Specimen Required

Formalin-fixed, paraffin-embedded block or unstained, positively charged slides

Container Type

Paraffin Embedded Tissue Block

Collection Instructions

Included Pathology Report.

Processing Information - Lab Use Only

Transport Temperature


Specimen Stability

Room Temp: Indefinite; Refrigerated: Indefinite; Frozen: Unacceptable

Minimum Test Volume

1 Block or 3 Slides

Processing Instructions

Indicate Histology Specimen ID and source of specimen in comments. Send specimen in an IHC Specimen Kit Box to Quest. Include Pathology Report. Requires TSO form.


Quest Chantilly test code: 90196. Requires TSO form.

CPT Codes