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Lab Test Dictionary

Cryoglobulin (% Cryocrit), Serum (36562)


Visual inspection for the formation of Cryoglobuli; Cryocrit calculation, if positive


Cryglobulin, Qualitative

Specimen Type


Performing Lab

Quest Diagnostics San Juan Capistrano

Epic ID


Lab Test Days


Standard TAT

5-7 Days

Collection Information

Specimen Required

4-6 mL Blood

Container Type

Red Top (No Additive)

Collection Instructions

Overnight fasting is required. Avoid hemolysis. After collection, place specimen in a heat pack or warm bath and deliver to lab asap.

Processing Information - Lab Use Only

Transport Temperature


Specimen Stability

Room Temp: 72 Hours; Refrigerated: Unacceptable; Frozen: Unacceptable

Rejection Criteria

Gross hemolysis; Lipemia; Refrigerated or frozen samples; Icterus samples; Serum Separator Tube (SST)

Test Volume Required

3 mL Incubated Serum

Minimum Test Volume

2 mL Incubated Serum

Processing Instructions

Allow serum to clot for ONE HOUR in 37 C water bath, oven, incubator, or heat block. After clotting, centrifuge the specimen for 10 minutes at 3000 rpm utilizing on of the 3 options below: 1) In a "warm" centrifuge at 37 C; 2) In a bech-top centrifuge placed in a "warm room" at 37 C; 3) At room temp, in a bench-top centrifuge pre-warmed by running it for 10 minutes at 2000 rpm. After centrifuging, decant serum into a screw-cap vial. Transport at room temp. Avoid hemolysis. NOTE: No other tests can be added to the tube; cryocrit and cryoglobulin evaluation only.

CPT Codes