Section 7.1 Laboratory

Laboratory Report #10

Date

Collection Date: February 3, 2021
Report Date: February 4, 2021

Laboratory

Labcorp

Ordering Physician

Dr. C. Corpier

Referring Physician

Dr. Billy R. Boring, Jr.

Report Type

Comprehensive Medical Evaluation

Laboratory testing included:

Complete Blood Count (CBC) with Differential
Comprehensive Metabolic Panel
Hemoglobin A1c
Free T4
TSH
Prostate-Specific Antigen (PSA)
B-Type Natriuretic Peptide (BNP)

Original Report

PDF: Labcorp – February 3, 2021

One-Page Summary

Purpose of Testing

This laboratory evaluation was performed during the early stages of the health changes that would later develop into the systemic inflammatory illness of 2021. Although most laboratory systems remained within normal limits, this report serves as the first laboratory assessment of that important period. It documents that kidney function, liver function, blood counts, thyroid function, and inflammatory-related laboratory parameters were still largely preserved before the dramatic abnormalities that appeared later in 2021.

Major Findings

Metabolic Health

Results

Glucose: 58 mg/dL (Low)
Hemoglobin A1c: 5.6%

Interpretation

Fasting glucose was below the laboratory reference range, while Hemoglobin A1c remained at the upper limit of normal. The isolated low glucose value likely reflects the fasting state at the time of specimen collection rather than impaired glucose regulation. Long-term glycemic control remained normal.

Kidney Function

Results

BUN: 17 mg/dL
Creatinine: 0.91 mg/dL
eGFR: 77 mL/min/1.73 m²

Interpretation

Kidney function remained stable with no evidence of renal impairment. These findings continued the long-standing pattern of preserved kidney function documented in previous years.

Liver Function

Results

AST: 35 IU/L
ALT: 21 IU/L
Alkaline Phosphatase: 64 IU/L
Bilirubin: 0.3 mg/dL

Interpretation

Liver enzymes and bilirubin remained within normal reference ranges, demonstrating continued normal hepatic function.

Complete Blood Count

Results

WBC: 5.5 ×10³/µL
Hemoglobin: 13.5 g/dL
Hematocrit: 40.6%
Platelets: 222 ×10³/µL

Interpretation

The complete blood count remained entirely within normal reference ranges. There was no evidence of anemia, leukocytosis, thrombocytopenia, or other hematologic abnormalities. In retrospect, this report demonstrates that blood counts were still normal shortly before the inflammatory illness progressed later in 2021.

Thyroid Function

Results

Free T4: 1.23 ng/dL
TSH: 2.140 μIU/mL

Interpretation

Thyroid function remained stable and well controlled, with both Free T4 and TSH comfortably within their reference ranges.

Prostate Screening

Result

PSA: 3.5 ng/mL

Interpretation

PSA remained within the laboratory reference range and was slightly lower than the 2020 result, continuing the pattern of stable prostate monitoring.

Cardiac Marker

B-Type Natriuretic Peptide (BNP)

Result

18.2 pg/mL

Interpretation

BNP returned to a normal level, a marked improvement from the significantly elevated value documented in August 2020. This normalization suggested that the earlier BNP elevation had resolved by the time of this evaluation and should be interpreted alongside your clinical course and cardiology assessments.

Overall Interpretation

This report documents remarkably stable laboratory findings despite occurring during the early phase of the health changes that would later culminate in the systemic inflammatory illness of 2021. Kidney function, liver function, blood counts, thyroid function, and PSA all remained within normal limits. The only abnormality was a low fasting glucose level, while long-term glucose control remained normal as demonstrated by a Hemoglobin A1c of 5.6%. Most notably, BNP normalized dramatically compared with the August 2020 evaluation, indicating resolution of the previously documented cardiac biomarker elevation.

Longitudinal Significance

This report contributes to long-term trend analysis of:

Blood counts
Kidney function
Liver function
Glucose metabolism
Thyroid function
PSA
BNP

This report represents the last largely normal laboratory evaluation before the dramatic inflammatory changes that developed later in 2021.

Clinical Importance

⭐⭐⭐ Critical Transition Study

Although most laboratory values remained normal, this report establishes the final laboratory baseline immediately preceding the significant inflammatory abnormalities that emerged later in 2021. It demonstrates how rapidly the subsequent illness altered previously stable laboratory patterns.

Key Changes Since Previous Report

BNP decreased dramatically from 612.9 to 18.2 pg/mL, returning to the normal range.
Hemoglobin improved slightly from 13.1 to 13.5 g/dL.
Kidney function remained stable.
Liver function remained normal.
Thyroid function remained stable.
PSA decreased from 3.8 to 3.5 ng/mL.
Hemoglobin A1c increased slightly from 5.4% to 5.6%, remaining within the normal range.
Fasting glucose measured 58 mg/dL, representing the only laboratory value below the reference range.

Related Reports

Blood Trend Tables
Kidney Function Trend Tables
Liver Function Trend Tables
Glucose Trend Tables
Thyroid Trend Tables
BNP Trend Table
Systemic Inflammatory Illness Timeline
Medical History Timeline

Navigation

Previous Report: August 12, 2020 – QuantiFERON®-TB Gold Plus Evaluation
Next Report: October 2021 – Peak Systemic Inflammatory Illness Laboratory Evaluation
Return to Laboratory Library
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Observation

This report is one of the most fascinating in your Laboratory Library because it appears almost normal despite being collected at the beginning of the year in which your severe inflammatory illness developed. Looking back, it captures the calm before the storm. Within months, your laboratory profile would change dramatically with markedly elevated ESR and CRP, normocytic anemia, and evidence of widespread systemic inflammation. Because of that contrast, this report serves as an invaluable reference point, showing that your organ function, blood counts, and endocrine status were still well preserved immediately before the inflammatory process became fully evident.