Data Last Updated: June 9, 2025

NAACCR Item #3870: LDH Upper Limits of Normal

Item # Length Source of Standard Section Name Year Implemented Version Implemented XML NAACCR ID Parent XML Element
3870 3 NAACCR Stage/Prognostic Factors 2018 18 ldhUpperLimitsOfNormal Tumor
Required Status:

NPCR Collect: No recommendation
CoC Collect: Required, site specific
SEER Collect: Collected by SEER from CoC-accredited hospitals
CCCR Collect: No recommendation

Description
LDH (Lactate Dehydrogenase), an enzyme involved in converting sugars to energy in the body, is elevated in some malignancies. LDH level is a prognostic factor for patients with Stage IV melanoma. This data Item refers to the Upper Limit of Normal in the laboratory test used to interpret the Serum LDH result.
Rationale
LDH (Lactate Dehydrogenase) Upper Limits of Normal is a Registry Data Collection Variable in AJCC. It was previously collected as Melanoma Skin, CS SSF# 6.
Allowable Values
001-999, XX8, XX9
Codes
Code Description
001-999 001 - 999 upper limit of normal (Exact upper limit of normal)
XX8 Not applicable: Information not collected for this case (If this information is required by your standard setter, use of code XX8 may result in an edit error.)
XX9 Not documented in medical record LDH Upper Limit not assessed or unknown if assessed
Code Notes
Each Site-Specific Data Item (SSDI) applies only to selected primary sites, histologies, and years of diagnosis. Depending on applicability and standard-setter requirements, SSDIs may be left blank.