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Lab Test Dictionary

aHUS (complement-mediated TMA) (TMA Functional Panel) (Serologies for TTP, aHUS, HUS) (aHUS-FP)



Specimen Type

See Below

Performing Lab

University of Iowa

Epic ID

Other Reference Test

Lab Test Days


Standard TAT

4 Weeks

Collection Information

Specimen Required

4-6 mL Blood in a (red-top) ***and*** 4-6 mL Whole Blood in an EDTA (lavender-top)

Container Type

See Below

Collection Instructions

4-6 mL Blood in a (red-top) ***and*** 4-6 mL Whole Blood in an EDTA (lavender-top). A University of Iowa Kidney Testing requisition must be completed by the physician and sent to lab with specimens.

Processing Information - Lab Use Only

Transport Temperature


Rejection Criteria

Samples received thawed; Serum separator tube (SST)

Test Volume Required

3 mL Serum ***and*** 3 mL EDTA Plasma

Minimum Test Volume

2 mL Serum ***and*** 2 mL EDTA Plasma

Processing Instructions

Serum and EDTA Plasma: Centrifuge and separate serum and plasma into 4 cryovials each and freeze immediately. Indicate source of blood on each tube. Submit the completed University of Iowa Kidney Testing requisition with specimens frozen. Ship Monday-Thursday ONLY, no weekends or holidays.

Included Tests

18 Tests: C3, C3c, C4, C5, FD, FB, Ba, Bb, Properdin, Soluble C5b-9 (sCSb-9), FI and FH levels, CH50, APFA, FHAA, FBAA, C3b Deposition, Fluid Phase Activity-IFE) Note: ADAMTS-13 activity is no longer included in the panel and must be requested separately if needed (See separate test in LTD for specimen requirement).


Univ Iowa MORL test Code aHUS-FP (Not genetic, auth not needed)

CPT Codes

83516 (x2), 83520, 86160 (x11), 86161 (x2), 86162, 86334


02-14-20 (1-13-23 CS)