LOINCActiveBoth

LOINC Code 99308-9: Acid alpha glucosidase cross-reactive immunologic material (CRIM) IB Ql (WBC)

99308-9 is a LOINC code used to identify Acid alpha glucosidase cross-reactive immunologic material (CRIM) IB Ql (WBC) in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Acid alpha glucosidase cross-reactive immunologic material (CRIM). It is commonly used with the system or sample type WBC.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Acid alpha glucosidase cross-reactive immunologic material (CRIM). It is commonly used with the system or sample type WBC.

When is it used?

  • Used in lab systems, EHRs, and clinical data exchange.
  • May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
  • Status: ACTIVE
  • Order vs observation: Both
  • Method: IB

What it does not mean

  • The code identifies the observation or test, not the actual result.

Key facts

  • Acid alpha glucosidase cross-reactive immunologic material (CRIM) [Presence] in Leukocytes by Immunoblot
  • Acid alpha glucosidase cross-reactive immunologic material (CRIM)
  • Cross-reactive immunological material (CRIM) status in patients with Pompe disease is important when assessing whether immunosuppression is needed when initiating enzyme replacement therapy.
  • AAG CRIM; Acd; Acid A-Glucosidase; Acid maltase; Acids; Alfa; Alpha galactosidase; Alpha-1,4-glucosidase; Blt; Chemistry; CRIM; GAA; Glucoinvertase; Glucosidosucrase; Immune blot; Immunobl; Immunoblot; Immunol; Leukocytes; Maltase; Maltase-glucoamylase; Ordinal; Point in time; Pompe disease; PR; QL; Qual; Qualitative; Random; Reac; React; RIBA; Screen; WB; WBCs; WBLOT; West blot; West blt; Western blot; White blood cells

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Acid alpha glucosidase cross-reactive immunologic material (CRIM) IB Ql (WBC)Acid alpha glucosidase cross-reactive immunologic material (CRIM) [Presence] in Leukocytes by ImmunoblotAAG CRIM WBC Ql IBAcid alpha glucosidase cross-reactive immunologic material (CRIM)CHEMAcid alpha glucosidase cross-reactive immunologic material (CRIM), White blood cellsPrThr

Frequently asked questions

Code details

Code99308-9
SystemLOINC
Display nameAcid alpha glucosidase cross-reactive immunologic material (CRIM) IB Ql (WBC)
DescriptionAcid alpha glucosidase cross-reactive immunologic material (CRIM)
Short nameAAG CRIM WBC Ql IB
ComponentAcid alpha glucosidase cross-reactive immunologic material (CRIM)
PropertyPrThr
TimingPt
System (specimen)WBC
ScaleOrd
MethodIB
ClassCHEM
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.72
Last changed2.72

Consumer names

Acid alpha glucosidase cross-reactive immunologic material (CRIM), White blood cells

Part names

Acid alpha glucosidase cross-reactive immunologic material (CRIM)PrThrPtWBCOrdIBPresence or ThresholdPoint in time (spot)White blood cellsImmunoblot

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.